Question

9. যদি A = B = 45° হয়, তবে যাচাই করি যে,
(i) sin (A+B)=sin A cos B+cos A sin B
(i) cos (A+B)= cos A cos B-sin A sin B


pls tell​

Answer 1

Answer:

1.). 1

2.). 0

Step-by-step explanation:

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