Question

2sinx*cosx= square root 3* sinx.

how do i solve for x? which identities do i use?

Answer 1

begin by squaring both sides

Answer 2

So then 2sinxcosx - sqr3 sinx = 0
so sinx(2cosx-sqr3) = 0
Now solve

Answer 3

either sinx = 0 or (2cosx-sqr3) = 0.

Answer 4

@incognito so i don't use an identity after all?

@chandanjha I squared them and got 4(sinxcosx)^2=3sinx^2

I'm trying both of your methods to see which one i understand better :) thank you in advance!

Answer 5

i think its
so it should be 3 sin x