Theorem resinf1o 24086

Description: The sine function is a bijection when restricted to its principal domain. (Contributed by Mario Carneiro, 12-May-2014.)

Assertion

Ref	Expression
resinf1o	⊢ (sin ↾ (-(π / 2)[,](π / 2))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1)

Proof of Theorem resinf1o

Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		recosf1o 24085	. . 3 ⊢ (cos ↾ (0[,]π)):(0[,]π)–1-1-onto→(-1[,]1)
2		eqid 2610	. . . . 5 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)) = (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))
3		halfpire 24020	. . . . . . . 8 ⊢ (π / 2) ∈ ℝ
4		neghalfpire 24021	. . . . . . . . . 10 ⊢ -(π / 2) ∈ ℝ
5		iccssre 12126	. . . . . . . . . 10 ⊢ ((-(π / 2) ∈ ℝ ∧ (π / 2) ∈ ℝ) → (-(π / 2)[,](π / 2)) ⊆ ℝ)
6	4, 3, 5	mp2an 704	. . . . . . . . 9 ⊢ (-(π / 2)[,](π / 2)) ⊆ ℝ
7	6	sseli 3564	. . . . . . . 8 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → 𝑥 ∈ ℝ)
8		resubcl 10224	. . . . . . . 8 ⊢ (((π / 2) ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((π / 2) − 𝑥) ∈ ℝ)
9	3, 7, 8	sylancr 694	. . . . . . 7 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → ((π / 2) − 𝑥) ∈ ℝ)
10	4, 3	elicc2i 12110	. . . . . . . . 9 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↔ (𝑥 ∈ ℝ ∧ -(π / 2) ≤ 𝑥 ∧ 𝑥 ≤ (π / 2)))
11	10	simp3bi 1071	. . . . . . . 8 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → 𝑥 ≤ (π / 2))
12		subge0 10420	. . . . . . . . 9 ⊢ (((π / 2) ∈ ℝ ∧ 𝑥 ∈ ℝ) → (0 ≤ ((π / 2) − 𝑥) ↔ 𝑥 ≤ (π / 2)))
13	3, 7, 12	sylancr 694	. . . . . . . 8 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → (0 ≤ ((π / 2) − 𝑥) ↔ 𝑥 ≤ (π / 2)))
14	11, 13	mpbird 246	. . . . . . 7 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → 0 ≤ ((π / 2) − 𝑥))
15	3	recni 9931	. . . . . . . . . 10 ⊢ (π / 2) ∈ ℂ
16		picn 24015	. . . . . . . . . 10 ⊢ π ∈ ℂ
17	15	negcli 10228	. . . . . . . . . 10 ⊢ -(π / 2) ∈ ℂ
18	16, 15	negsubi 10238	. . . . . . . . . . 11 ⊢ (π + -(π / 2)) = (π − (π / 2))
19		pidiv2halves 24023	. . . . . . . . . . . 12 ⊢ ((π / 2) + (π / 2)) = π
20	16, 15, 15, 19	subaddrii 10249	. . . . . . . . . . 11 ⊢ (π − (π / 2)) = (π / 2)
21	18, 20	eqtri 2632	. . . . . . . . . 10 ⊢ (π + -(π / 2)) = (π / 2)
22	15, 16, 17, 21	subaddrii 10249	. . . . . . . . 9 ⊢ ((π / 2) − π) = -(π / 2)
23	10	simp2bi 1070	. . . . . . . . 9 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → -(π / 2) ≤ 𝑥)
24	22, 23	syl5eqbr 4618	. . . . . . . 8 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → ((π / 2) − π) ≤ 𝑥)
25		pire 24014	. . . . . . . . . 10 ⊢ π ∈ ℝ
26		suble 10385	. . . . . . . . . 10 ⊢ (((π / 2) ∈ ℝ ∧ π ∈ ℝ ∧ 𝑥 ∈ ℝ) → (((π / 2) − π) ≤ 𝑥 ↔ ((π / 2) − 𝑥) ≤ π))
27	3, 25, 26	mp3an12 1406	. . . . . . . . 9 ⊢ (𝑥 ∈ ℝ → (((π / 2) − π) ≤ 𝑥 ↔ ((π / 2) − 𝑥) ≤ π))
28	7, 27	syl 17	. . . . . . . 8 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → (((π / 2) − π) ≤ 𝑥 ↔ ((π / 2) − 𝑥) ≤ π))
29	24, 28	mpbid 221	. . . . . . 7 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → ((π / 2) − 𝑥) ≤ π)
30		0re 9919	. . . . . . . 8 ⊢ 0 ∈ ℝ
31	30, 25	elicc2i 12110	. . . . . . 7 ⊢ (((π / 2) − 𝑥) ∈ (0[,]π) ↔ (((π / 2) − 𝑥) ∈ ℝ ∧ 0 ≤ ((π / 2) − 𝑥) ∧ ((π / 2) − 𝑥) ≤ π))
32	9, 14, 29, 31	syl3anbrc 1239	. . . . . 6 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → ((π / 2) − 𝑥) ∈ (0[,]π))
33	32	adantl 481	. . . . 5 ⊢ ((⊤ ∧ 𝑥 ∈ (-(π / 2)[,](π / 2))) → ((π / 2) − 𝑥) ∈ (0[,]π))
34	30, 25	elicc2i 12110	. . . . . . . . 9 ⊢ (𝑦 ∈ (0[,]π) ↔ (𝑦 ∈ ℝ ∧ 0 ≤ 𝑦 ∧ 𝑦 ≤ π))
35	34	simp1bi 1069	. . . . . . . 8 ⊢ (𝑦 ∈ (0[,]π) → 𝑦 ∈ ℝ)
36		resubcl 10224	. . . . . . . 8 ⊢ (((π / 2) ∈ ℝ ∧ 𝑦 ∈ ℝ) → ((π / 2) − 𝑦) ∈ ℝ)
37	3, 35, 36	sylancr 694	. . . . . . 7 ⊢ (𝑦 ∈ (0[,]π) → ((π / 2) − 𝑦) ∈ ℝ)
38	34	simp3bi 1071	. . . . . . . . 9 ⊢ (𝑦 ∈ (0[,]π) → 𝑦 ≤ π)
39	15, 15	subnegi 10239	. . . . . . . . . 10 ⊢ ((π / 2) − -(π / 2)) = ((π / 2) + (π / 2))
40	39, 19	eqtri 2632	. . . . . . . . 9 ⊢ ((π / 2) − -(π / 2)) = π
41	38, 40	syl6breqr 4625	. . . . . . . 8 ⊢ (𝑦 ∈ (0[,]π) → 𝑦 ≤ ((π / 2) − -(π / 2)))
42		lesub 10386	. . . . . . . . . 10 ⊢ ((𝑦 ∈ ℝ ∧ (π / 2) ∈ ℝ ∧ -(π / 2) ∈ ℝ) → (𝑦 ≤ ((π / 2) − -(π / 2)) ↔ -(π / 2) ≤ ((π / 2) − 𝑦)))
43	3, 4, 42	mp3an23 1408	. . . . . . . . 9 ⊢ (𝑦 ∈ ℝ → (𝑦 ≤ ((π / 2) − -(π / 2)) ↔ -(π / 2) ≤ ((π / 2) − 𝑦)))
44	35, 43	syl 17	. . . . . . . 8 ⊢ (𝑦 ∈ (0[,]π) → (𝑦 ≤ ((π / 2) − -(π / 2)) ↔ -(π / 2) ≤ ((π / 2) − 𝑦)))
45	41, 44	mpbid 221	. . . . . . 7 ⊢ (𝑦 ∈ (0[,]π) → -(π / 2) ≤ ((π / 2) − 𝑦))
46	15	subidi 10231	. . . . . . . . 9 ⊢ ((π / 2) − (π / 2)) = 0
47	34	simp2bi 1070	. . . . . . . . 9 ⊢ (𝑦 ∈ (0[,]π) → 0 ≤ 𝑦)
48	46, 47	syl5eqbr 4618	. . . . . . . 8 ⊢ (𝑦 ∈ (0[,]π) → ((π / 2) − (π / 2)) ≤ 𝑦)
49		suble 10385	. . . . . . . . . 10 ⊢ (((π / 2) ∈ ℝ ∧ (π / 2) ∈ ℝ ∧ 𝑦 ∈ ℝ) → (((π / 2) − (π / 2)) ≤ 𝑦 ↔ ((π / 2) − 𝑦) ≤ (π / 2)))
50	3, 3, 49	mp3an12 1406	. . . . . . . . 9 ⊢ (𝑦 ∈ ℝ → (((π / 2) − (π / 2)) ≤ 𝑦 ↔ ((π / 2) − 𝑦) ≤ (π / 2)))
51	35, 50	syl 17	. . . . . . . 8 ⊢ (𝑦 ∈ (0[,]π) → (((π / 2) − (π / 2)) ≤ 𝑦 ↔ ((π / 2) − 𝑦) ≤ (π / 2)))
52	48, 51	mpbid 221	. . . . . . 7 ⊢ (𝑦 ∈ (0[,]π) → ((π / 2) − 𝑦) ≤ (π / 2))
53	4, 3	elicc2i 12110	. . . . . . 7 ⊢ (((π / 2) − 𝑦) ∈ (-(π / 2)[,](π / 2)) ↔ (((π / 2) − 𝑦) ∈ ℝ ∧ -(π / 2) ≤ ((π / 2) − 𝑦) ∧ ((π / 2) − 𝑦) ≤ (π / 2)))
54	37, 45, 52, 53	syl3anbrc 1239	. . . . . 6 ⊢ (𝑦 ∈ (0[,]π) → ((π / 2) − 𝑦) ∈ (-(π / 2)[,](π / 2)))
55	54	adantl 481	. . . . 5 ⊢ ((⊤ ∧ 𝑦 ∈ (0[,]π)) → ((π / 2) − 𝑦) ∈ (-(π / 2)[,](π / 2)))
56		iccssre 12126	. . . . . . . . . . 11 ⊢ ((0 ∈ ℝ ∧ π ∈ ℝ) → (0[,]π) ⊆ ℝ)
57	30, 25, 56	mp2an 704	. . . . . . . . . 10 ⊢ (0[,]π) ⊆ ℝ
58		ax-resscn 9872	. . . . . . . . . 10 ⊢ ℝ ⊆ ℂ
59	57, 58	sstri 3577	. . . . . . . . 9 ⊢ (0[,]π) ⊆ ℂ
60	59	sseli 3564	. . . . . . . 8 ⊢ (𝑦 ∈ (0[,]π) → 𝑦 ∈ ℂ)
61	6, 58	sstri 3577	. . . . . . . . 9 ⊢ (-(π / 2)[,](π / 2)) ⊆ ℂ
62	61	sseli 3564	. . . . . . . 8 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) → 𝑥 ∈ ℂ)
63		subsub23 10165	. . . . . . . . 9 ⊢ (((π / 2) ∈ ℂ ∧ 𝑦 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (((π / 2) − 𝑦) = 𝑥 ↔ ((π / 2) − 𝑥) = 𝑦))
64	15, 63	mp3an1 1403	. . . . . . . 8 ⊢ ((𝑦 ∈ ℂ ∧ 𝑥 ∈ ℂ) → (((π / 2) − 𝑦) = 𝑥 ↔ ((π / 2) − 𝑥) = 𝑦))
65	60, 62, 64	syl2anr 494	. . . . . . 7 ⊢ ((𝑥 ∈ (-(π / 2)[,](π / 2)) ∧ 𝑦 ∈ (0[,]π)) → (((π / 2) − 𝑦) = 𝑥 ↔ ((π / 2) − 𝑥) = 𝑦))
66	65	adantl 481	. . . . . 6 ⊢ ((⊤ ∧ (𝑥 ∈ (-(π / 2)[,](π / 2)) ∧ 𝑦 ∈ (0[,]π))) → (((π / 2) − 𝑦) = 𝑥 ↔ ((π / 2) − 𝑥) = 𝑦))
67		eqcom 2617	. . . . . 6 ⊢ (𝑥 = ((π / 2) − 𝑦) ↔ ((π / 2) − 𝑦) = 𝑥)
68		eqcom 2617	. . . . . 6 ⊢ (𝑦 = ((π / 2) − 𝑥) ↔ ((π / 2) − 𝑥) = 𝑦)
69	66, 67, 68	3bitr4g 302	. . . . 5 ⊢ ((⊤ ∧ (𝑥 ∈ (-(π / 2)[,](π / 2)) ∧ 𝑦 ∈ (0[,]π))) → (𝑥 = ((π / 2) − 𝑦) ↔ 𝑦 = ((π / 2) − 𝑥)))
70	2, 33, 55, 69	f1o2d 6785	. . . 4 ⊢ (⊤ → (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)):(-(π / 2)[,](π / 2))–1-1-onto→(0[,]π))
71	70	trud 1484	. . 3 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)):(-(π / 2)[,](π / 2))–1-1-onto→(0[,]π)
72		f1oco 6072	. . 3 ⊢ (((cos ↾ (0[,]π)):(0[,]π)–1-1-onto→(-1[,]1) ∧ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)):(-(π / 2)[,](π / 2))–1-1-onto→(0[,]π)) → ((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1))
73	1, 71, 72	mp2an 704	. 2 ⊢ ((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1)
74		cosf 14694	. . . . . . . 8 ⊢ cos:ℂ⟶ℂ
75		ffn 5958	. . . . . . . 8 ⊢ (cos:ℂ⟶ℂ → cos Fn ℂ)
76	74, 75	ax-mp 5	. . . . . . 7 ⊢ cos Fn ℂ
77		fnssres 5918	. . . . . . 7 ⊢ ((cos Fn ℂ ∧ (0[,]π) ⊆ ℂ) → (cos ↾ (0[,]π)) Fn (0[,]π))
78	76, 59, 77	mp2an 704	. . . . . 6 ⊢ (cos ↾ (0[,]π)) Fn (0[,]π)
79	2, 32	fmpti 6291	. . . . . 6 ⊢ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)):(-(π / 2)[,](π / 2))⟶(0[,]π)
80		fnfco 5982	. . . . . 6 ⊢ (((cos ↾ (0[,]π)) Fn (0[,]π) ∧ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)):(-(π / 2)[,](π / 2))⟶(0[,]π)) → ((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) Fn (-(π / 2)[,](π / 2)))
81	78, 79, 80	mp2an 704	. . . . 5 ⊢ ((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) Fn (-(π / 2)[,](π / 2))
82		sinf 14693	. . . . . . 7 ⊢ sin:ℂ⟶ℂ
83		ffn 5958	. . . . . . 7 ⊢ (sin:ℂ⟶ℂ → sin Fn ℂ)
84	82, 83	ax-mp 5	. . . . . 6 ⊢ sin Fn ℂ
85		fnssres 5918	. . . . . 6 ⊢ ((sin Fn ℂ ∧ (-(π / 2)[,](π / 2)) ⊆ ℂ) → (sin ↾ (-(π / 2)[,](π / 2))) Fn (-(π / 2)[,](π / 2)))
86	84, 61, 85	mp2an 704	. . . . 5 ⊢ (sin ↾ (-(π / 2)[,](π / 2))) Fn (-(π / 2)[,](π / 2))
87		eqfnfv 6219	. . . . 5 ⊢ ((((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) Fn (-(π / 2)[,](π / 2)) ∧ (sin ↾ (-(π / 2)[,](π / 2))) Fn (-(π / 2)[,](π / 2))) → (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) = (sin ↾ (-(π / 2)[,](π / 2))) ↔ ∀𝑦 ∈ (-(π / 2)[,](π / 2))(((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)))‘𝑦) = ((sin ↾ (-(π / 2)[,](π / 2)))‘𝑦)))
88	81, 86, 87	mp2an 704	. . . 4 ⊢ (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) = (sin ↾ (-(π / 2)[,](π / 2))) ↔ ∀𝑦 ∈ (-(π / 2)[,](π / 2))(((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)))‘𝑦) = ((sin ↾ (-(π / 2)[,](π / 2)))‘𝑦))
89	79	ffvelrni 6266	. . . . . . 7 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → ((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦) ∈ (0[,]π))
90		fvres 6117	. . . . . . 7 ⊢ (((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦) ∈ (0[,]π) → ((cos ↾ (0[,]π))‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)) = (cos‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)))
91	89, 90	syl 17	. . . . . 6 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → ((cos ↾ (0[,]π))‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)) = (cos‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)))
92		oveq2 6557	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → ((π / 2) − 𝑥) = ((π / 2) − 𝑦))
93		ovex 6577	. . . . . . . 8 ⊢ ((π / 2) − 𝑦) ∈ V
94	92, 2, 93	fvmpt 6191	. . . . . . 7 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → ((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦) = ((π / 2) − 𝑦))
95	94	fveq2d 6107	. . . . . 6 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → (cos‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)) = (cos‘((π / 2) − 𝑦)))
96	61	sseli 3564	. . . . . . 7 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → 𝑦 ∈ ℂ)
97		coshalfpim 24051	. . . . . . 7 ⊢ (𝑦 ∈ ℂ → (cos‘((π / 2) − 𝑦)) = (sin‘𝑦))
98	96, 97	syl 17	. . . . . 6 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → (cos‘((π / 2) − 𝑦)) = (sin‘𝑦))
99	91, 95, 98	3eqtrd 2648	. . . . 5 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → ((cos ↾ (0[,]π))‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)) = (sin‘𝑦))
100		fvco3 6185	. . . . . 6 ⊢ (((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)):(-(π / 2)[,](π / 2))⟶(0[,]π) ∧ 𝑦 ∈ (-(π / 2)[,](π / 2))) → (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)))‘𝑦) = ((cos ↾ (0[,]π))‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)))
101	79, 100	mpan 702	. . . . 5 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)))‘𝑦) = ((cos ↾ (0[,]π))‘((𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))‘𝑦)))
102		fvres 6117	. . . . 5 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → ((sin ↾ (-(π / 2)[,](π / 2)))‘𝑦) = (sin‘𝑦))
103	99, 101, 102	3eqtr4d 2654	. . . 4 ⊢ (𝑦 ∈ (-(π / 2)[,](π / 2)) → (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥)))‘𝑦) = ((sin ↾ (-(π / 2)[,](π / 2)))‘𝑦))
104	88, 103	mprgbir 2911	. . 3 ⊢ ((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) = (sin ↾ (-(π / 2)[,](π / 2)))
105		f1oeq1 6040	. . 3 ⊢ (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))) = (sin ↾ (-(π / 2)[,](π / 2))) → (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1) ↔ (sin ↾ (-(π / 2)[,](π / 2))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1)))
106	104, 105	ax-mp 5	. 2 ⊢ (((cos ↾ (0[,]π)) ∘ (𝑥 ∈ (-(π / 2)[,](π / 2)) ↦ ((π / 2) − 𝑥))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1) ↔ (sin ↾ (-(π / 2)[,](π / 2))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1))
107	73, 106	mpbi 219	1 ⊢ (sin ↾ (-(π / 2)[,](π / 2))):(-(π / 2)[,](π / 2))–1-1-onto→(-1[,]1)

Syntax hints:   ↔ wb 195   ∧ wa 383   = wceq 1475  ⊤wtru 1476   ∈ wcel 1977  ∀wral 2896   ⊆ wss 3540   class class class wbr 4583   ↦ cmpt 4643   ↾ cres 5040   ∘ ccom 5042   Fn wfn 5799  ⟶wf 5800  –1-1-onto→wf1o 5803  ‘cfv 5804  (class class class)co 6549  ℂcc 9813  ℝcr 9814  0cc0 9815  1c1 9816   + caddc 9818   ≤ cle 9954   − cmin 10145  -cneg 10146   / cdiv 10563  2c2 10947  [,]cicc 12049  sincsin 14633  cosccos 14634  πcpi 14636

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893  ax-addf 9894  ax-mulf 9895

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-fal 1481  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-iin 4458  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-supp 7183  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-2o 7448  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fsupp 8159  df-fi 8200  df-sup 8231  df-inf 8232  df-oi 8298  df-card 8648  df-cda 8873  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-ioo 12050  df-ioc 12051  df-ico 12052  df-icc 12053  df-fz 12198  df-fzo 12335  df-fl 12455  df-seq 12664  df-exp 12723  df-fac 12923  df-bc 12952  df-hash 12980  df-shft 13655  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-limsup 14050  df-clim 14067  df-rlim 14068  df-sum 14265  df-ef 14637  df-sin 14639  df-cos 14640  df-pi 14642  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-mulr 15782  df-starv 15783  df-sca 15784  df-vsca 15785  df-ip 15786  df-tset 15787  df-ple 15788  df-ds 15791  df-unif 15792  df-hom 15793  df-cco 15794  df-rest 15906  df-topn 15907  df-0g 15925  df-gsum 15926  df-topgen 15927  df-pt 15928  df-prds 15931  df-xrs 15985  df-qtop 15990  df-imas 15991  df-xps 15993  df-mre 16069  df-mrc 16070  df-acs 16072  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-submnd 17159  df-mulg 17364  df-cntz 17573  df-cmn 18018  df-psmet 19559  df-xmet 19560  df-met 19561  df-bl 19562  df-mopn 19563  df-fbas 19564  df-fg 19565  df-cnfld 19568  df-top 20521  df-bases 20522  df-topon 20523  df-topsp 20524  df-cld 20633  df-ntr 20634  df-cls 20635  df-nei 20712  df-lp 20750  df-perf 20751  df-cn 20841  df-cnp 20842  df-haus 20929  df-tx 21175  df-hmeo 21368  df-fil 21460  df-fm 21552  df-flim 21553  df-flf 21554  df-xms 21935  df-ms 21936  df-tms 21937  df-cncf 22489  df-limc 23436  df-dv 23437

This theorem is referenced by:  efif1olem4  24095  asinrebnd  24428