Verify the identity: sin (x-y) cos x cos y = Begin with the left side of the identity. What should be the first step? Ch

[answerhappygod]

Verify The Identity Sin X Y Cos X Cos Y Begin With The Left Side Of The Identity What Should Be The First Step Ch 1 (58.54 KiB) Viewed 47 times

Verify the identity: sin (x-y) cos x cos y = Begin with the left side of the identity. What should be the first step? Choose the correct answer below. OA. Use the difference formula for sines. OB. Use the reciprocal identities. OC. Use the difference formula for cosines. OD. Use the even-odd identities. + sin (y-z) cos y cos z Use the formula determined in the previous step to rewrite the terms of the sum. sin (x-y) sin (y-z) sin (z-x) cos x cos y cos y cos z cos z COS X + Simplify. + cos x cos y sin (z-x) COS Z COS X + What should be done next? Choose the correct answer below. A. Divide each term in the numerator by the denominator and simplify. B. Rewrite using the least common denominator. C. Combine like terms. OD. Factor the numerator. =0 Perform the operation identified in the previous step. sin (x-y) sin (y-z) sin (z-x) COS Z COS X cos x cos y sin x- cos y cos z COS X. sin y cos y cos z cos x cos y cos y. cos y cos z + sinz- cos z cos x COS Z. cos z cos x