Question

How do you solve `tan^2x=cosxtan^2x`?

Answer 1

`tan^2x - cosxtan^2x = 0`

`tan^2x(1 - cosx) = 0`

`tan^2x= 0 and cosx = 1`

`x = 0 + pin, 180 + pin, 180 + 2pin`

Hopefully this helps!