Question

2cos^(2)θ-cosθ=1

Answer 1

I really think that you should take a long moment to just learn your trig identities. Lol.

Answer 2

Lol, eventually getting the hang of it...slowly

Answer 3

Anyways, \[2\cos^2(\theta)-\cos(\theta)-1 = 0\]

Answer 4

Oh gosh, I just factored a bit too early. I factored cos out: cos(2cos(x)-1)=1. I see my problem, thanks.

Answer 5

Did you get: (cos x -2) (cos x +1)?

Answer 6

Oh nvm, forgot to bring back to the 2. My mistake :/