tO Verifying a Trigonometric Identity In Exercises 57–64, verify the identity. 57. sin cos x 58. sin + x) = cos x - X +x) = (cos x + 3 sin x) 59. sin 57 - X 60. cos 4 (cos x + sin x) = - 1 1 + tan 0 tan 0 61. tan(0 + n) = tan 0 62. tan 63. cos(л — Ө) + sin + 0) = 0 64. cos(x + y) cos(x – y) = cos² xr – sin? y

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 26E
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Verifying a Trigonometric Identity In
Exercises 57–64, verify the identity.

tO Verifying a Trigonometric Identity In
Exercises 57–64, verify the identity.
57. sin
cos x
58. sin
+ x) = cos x
- X
+x) = (cos x + 3 sin x)
59. sin
57
- X
60. cos
4
(cos x + sin x)
= -
1
1 + tan 0
tan 0
61. tan(0 + n)
= tan 0
62. tan
63. cos(л — Ө) + sin
+ 0) = 0
64. cos(x + y) cos(x – y) = cos² xr – sin? y
Transcribed Image Text:tO Verifying a Trigonometric Identity In Exercises 57–64, verify the identity. 57. sin cos x 58. sin + x) = cos x - X +x) = (cos x + 3 sin x) 59. sin 57 - X 60. cos 4 (cos x + sin x) = - 1 1 + tan 0 tan 0 61. tan(0 + n) = tan 0 62. tan 63. cos(л — Ө) + sin + 0) = 0 64. cos(x + y) cos(x – y) = cos² xr – sin? y
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