Question

(sin A +sin B)(sin A-sin B) = sin(A+B). sin( A-B)sin square theta + cos square theta is equal to ​

Answer 1

Answer:

1

Explanation:

sin(A+B)×sin(A-B)=sin(A+B) (GIVEN)

sin(A-B)=sin(A+B)/sin(A+B)=1

sin^2theta+cos^theta=1

therefore sin(A-B)sin^2theta+cos^2theta=1