● Show your work for any calculations needed or simplifications made! Clearly show your work and the steps necessary to prove an identity or to solve an equation. "Exact" solutions mean rational expressions - not decimals the calculator returns! cos(+77) by 3 1. Find the exact value of cos by using trigonometric identities to rewrite and simplify. 2. Verify the identity sin(A - B) sin(A + B) = sin² A – sin² B. -

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 68E
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Show your work for any calculations needed or simplifications made!
Clearly show your work and the steps necessary to prove an identity or to solve an equation.
"Exact" solutions mean rational expressions - not decimals the calculator returns!
π π
1. Find the exact value of cos + by using trigonometric identities to rewrite and simplify.
2. Verify the identity sin(A - B) sin(A + B) = sin² A-sin² B.
Transcribed Image Text:● Show your work for any calculations needed or simplifications made! Clearly show your work and the steps necessary to prove an identity or to solve an equation. "Exact" solutions mean rational expressions - not decimals the calculator returns! π π 1. Find the exact value of cos + by using trigonometric identities to rewrite and simplify. 2. Verify the identity sin(A - B) sin(A + B) = sin² A-sin² B.
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