Question

If sin 2 A = 2 sin A, then find A.​

Answer 1

Answer:

Sin 2 A=2 Sin A

sin2A = 2 sinA

In 2sinA

If A=O

=2sin0°

=2×O

=O

In sin 2A

=sin2×0°

sin0°

=sin0°

=0

Answer 2

Answer:

Let 'A' be 30.

Then, LHS = Sin 2A

= Sin 2 *30.

= Sin 60o.

=3/2 .

Now, RHS = 2 * SinA

= 2 * Sin30

= 2 * 1/2

= 1

That means LHSRHS

Therefore, Sin2A = 2SinA, only if 'A' is 0 .......

Hope you understood!!