Question

If tan A= root 3 then find.
(a) sin A cos B - cos A sin B.
(b) sin A sin B + cos A cos B.
Note: Right angle at c.

I want step by step. a and b answers. pls​

Answer 1

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Answer 2

Answer:

tan A = √3

then

a) - -1/2 or b) - √3/2