(1) Prove sin(A+B) = sin(A) cos(B)+sin(B) cos(A) by using the formula for cos(A+B)and a cofunction identity.
(1) Prove sin(A+B) = sin(A) cos(B)+sin(B) cos(A) by using the formula for cos(A+B)
and a cofunction identity.
Given:
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cos(AB cos A cos B - sin A sin B
We are going to p...
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sin (A B) sin A cos B+ cos Asin B with the use of formula cos (A +B) co-function of cos A = sin A 2 co-function of sinA = cos - A 2
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