Question

Solve 3sin2x=4cos2x

Answer 1

I think you will need to use trigonometric identities.

Answer 2

I know to use tanx=sinx/cosx but I am not sure how

Answer 3

Here are more identities: http://www.sosmath.com/trig/Trig5/trig5/trig5.html

One question, is it 2x or sin and cos squared?

Answer 4

They are both 2x

Answer 5

Is this along the right lines?

3sin2x = 4cos2x

let 2x=y

3siny=4cosy

siny/cosy = 4/3

tany = 4/3

tan(2x) = 4/3

Answer 6

I believe it is. Yup.