Question

I have no idea how i am supposed to do this problm.

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.)
2 cos2 θ − sin θ = 1

θ =

Answer 1

we can factor this:
(2sinθ+1)(sinθ−1)=0
sinθ=−12→θ={−π6+2kπ,7π6+2kπ}
sinθ=1→θ={π2+2kπ} @Drew1997

Answer 2

@drew1997
is the question
\(2 cos^2(θ) − sin(θ) = 1\)....................(A)
or
\(2 cos(2θ) − sin(θ) = 1\)....................(B)
?

Answer 3

That was my mis-type it was supposed to be \[2\cos(\theta)^2-\sin(\theta)=1\]