● 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. -

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