Question

If Sin 2Ø= 2 SinØ then find the value of Ø.


Need Full clarification and Explanation :- ​

Answer 1

Sin 2Ø= 2 Sin Ø

only in case if theta is 90

As

Sin(90+Ø)=+SinØ if angle is between 0-90...

hope it helps

Answer 2

Sin 2a = 2 sin a

2 sin a cos a = 2 sin a

cos a= 1

a= 2 n pie