Question: 4. Rewrite sin+ x so that it involves only the first power of cosine. Complete the two columns of the table below to demonstrate that

demonstrate that this is an identity. (10 points) Calculation Reason sin* x

Given in the problem5. Prove the identity: sin (2x) _cos(2x) - SOCK

sink COS X Complete the two columns of the table below to

demonstrate that this is an identity. (12 points) Calculation Reason sin (2x)

cos(2x) Given on the left side of the sinx COSX original problem6.

Prove the identity: (cosx + cosy) + (sinx - siny) = 2+2cos(x

4. Rewrite sin+ x so that it involves only the first power of cosine. Complete the two columns of the table below to demonstrate that this is an identity. (10 points) Calculation Reason sin* x Given in the problem5. Prove the identity: sin (2x) _cos(2x) - SOCK sink COS X Complete the two columns of the table below to demonstrate that this is an identity. (12 points) Calculation Reason sin (2x) cos(2x) Given on the left side of the sinx COSX original problem6. Prove the identity: (cosx + cosy) + (sinx - siny) = 2+2cos(x + >) Complete the two columns of the table below to demonstrate that this is an identity. (12 points) Calculation Reason (cosx + cosy) + (sinx - siny ) Given on the left side of the original problem7. Solve these equations: A. sin( *+ )- sin(x - )-1 Part I: Apply the sum and difference formulas for sine to simplify the left-hand side of the equation.(2 points) Part II: Find all solutions to the equation you found in part I.(4 points)B. sinxcosx = Part I: Use the double-angle formula for sine to rewrite the problem in terms of sine only.(2 points) Part II: Solve the equation, finding all solutions.(4 points)C. tan' x - 3tan x +2 =0 Part I: Factor the expression in the equation to make it easier to solve.(2 points) Part II: Solve the equation, finding all solutions.(4 points)

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