2. Express each of the following expressions as a single trigonometric ratio and then evaluate to an exact value, if possible. 8 cos² ()-4 a) b) ST -3 cos cos 0 - 3 sinsin 0 c) 6 tan 0+6 tan- 6-tan 0 tan-

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 69E
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2.
Express each of the following expressions as a single trigonometric ratio and then evaluate to an
exact value, if possible.
8 cos² (-4
a)
b)
5 п
os cos 0 - 3 sin sin 0
-3 cos-
6 tan 0+6 tan
6-tan 0 tan
Transcribed Image Text:2. Express each of the following expressions as a single trigonometric ratio and then evaluate to an exact value, if possible. 8 cos² (-4 a) b) 5 п os cos 0 - 3 sin sin 0 -3 cos- 6 tan 0+6 tan 6-tan 0 tan
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