Question

Use trigonometric identities to solve tan(2theta)+tan(theta)=0 exactly for 0 13 years ago

Answer 1

Hmm just looking at this, the first thing that comes to mind is that we probably want to get the same ARGUMENT for both trig functions. (The insides).

Do you remember the double angle formula for tangent?
Cause I'm guessing that's what we'll probably want to use here! c:

Answer 2

ok ill try that and see

Answer 3

Here is how i would solve it.

Answer 4

I would make tan(2x)---> 2sinxcosx/(cos^2x-sin^2) This would simplify to sin(4x)/(cos4x+1) x represent tetha

Answer 5

and tan(x) to sin/cos

Answer 6

This should make workingout the problem easier.

Answer 7

ok