57 2. Use an appropriate sum or difference identity to find the exact value of cos 12 V2 1 (a) 2 (d) –(56 – J2) (b) (c) (e) none of these + 2
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- Find the exact value of the expressions Bold cos left parenthesis alpha plus beta right parenthesiscos(α+β), Bold sin left parenthesis alpha plus beta right parenthesissin(α+β) and Bold tan left parenthesis alpha plus beta right parenthesistan(α+β) under the following conditions: Bold sin left parenthesis alpha right parenthesis equals StartFraction 40 Over 41 EndFractionsin(α)=4041, alphaα lies in quadrant I, and Bold sine left parenthesis beta right parenthesis equals StartFraction 24 Over 25 EndFractionsin(β)=2425, betaβ lies in quadrant II. Question content area bottom Part 1 a. Bold cos left parenthesis alpha plus beta right parenthesiscos(α+β)equals=enter your response here (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression.) Part 2 b. Bold sin left parenthesis alpha plus beta right parenthesissin(α+β)equals=enter your response here (Simplify your answer. Type an exact…Evaluate the indefinite integral. ∫9sin^5(x)cos(x)dx