Prove the trigonometric identity: sin(x + y) sin(x - y) = sin’x – sin? y. Which...

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math trigonometry

Answer 1

Answer #1

solution sin lety) sin(x-y) 2 sin (x+y) sin(x-y) [ cos (a*y-x+y) - cos(aayev-y)] CoS 22 [ 27 ] [ 608 24 * < (1-2sih?y - 1 + 2

Answer 2

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