3 years ago

Prove This :sin(A+B)+sin(A−B)=2sinA⋅cosB

Mathematics

1 answer:

MaRussiya [10]3 years ago

3 0

Answer:

We know

sin (A + B) = sin A cos B + cos A sin B

sin (A - B) = sin A cos B - cos A sin B

(A + B) + sin (A - B)

= sin A cos B + cos A sin B + sin A cos B - cos A sin B

= sin A cos B + sin A cos B

= 2 sin A cos B

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Prove This :sin(A+B)+sin(A−B)=2sinA⋅cosB​

Prove This :sin(A+B)+sin(A−B)=2sinA⋅cosB