Prove each equation (a) Equation 19a (b) Equation 19b (c) Equation 19c 19a sin x cos y sin(x y) sin(x y) 19b cos x cos y cos(x y) cos(x y) 19c sin x sin y cos(x y) cos(x y) ...

We know that SinXY SinX CosY CosX SinY 1 SinXY SinX CosY ...

Prove each equation. (a) Equation 19a (b) Equation 19b (c) Equation 19c 19a sin x cos y

Question:

Prove each equation.

(a) Equation 19a

(b) Equation 19b

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Calculus Early Transcendentals

ISBN: 9781337613927

9th Edition

Authors: James Stewart, Daniel K. Clegg, Saleem Watson, Lothar Redlin

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Question Posted: Apr 21, 2021 06:07 AM

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Prove each equation. (a) Equation 19a (b) Equation 19b (c) Equation 19c 19a sin x cos y

Question:

19a sin x cos y = [sin(x + y) + sin(x - y)] 19b cos x cos y =[cos(x + y) + cos(x - y)] 19c sin x sin y = [cos(x - y) - cos(x + y)]

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Calculus Early Transcendentals

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