Question

If sin 2A=2 sin A, then value of A will be i) 0 ii) 30° iii) 45° iv) 60°​

Answer 1

Answer:

The answer will be i)0.

Step-by-step explanation:

sin 2A = 2sin A.cos A (identity)

Since, sin 2A = 2sin A.cos A = 2sin A (according to ques.)

2sin A.cos A = 2sin A

cos A = 1.

A = 0.

That's all.

Answer 2

Answer:

(I) 0

Step-by-step explanation:

I can,t explain but it's right answer. thank you