28. Sin (Cos ¹(-4/5)) =

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 10E
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28. Sin (Cos ¹(-4/5)) =
29. Find the exact values of sin 75° and cos 15° using the sum or difference formula. Do not
find any rounded decimal answers.
30. Sin A = 5/13, A is in quadrant 1. Sin B = -12/13, B is in quadrant 3. Find the exact solution
of tan (A - B).
31. Simplify the expression 2cos (m/12) - 1 by using a double angle formula and find the
exact value.
Transcribed Image Text:28. Sin (Cos ¹(-4/5)) = 29. Find the exact values of sin 75° and cos 15° using the sum or difference formula. Do not find any rounded decimal answers. 30. Sin A = 5/13, A is in quadrant 1. Sin B = -12/13, B is in quadrant 3. Find the exact solution of tan (A - B). 31. Simplify the expression 2cos (m/12) - 1 by using a double angle formula and find the exact value.
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