Question

solve for 0<θ<2(3.14[pi]): 9cos^((2))θ-2cosθ-3=0
give answer in terms of 3.14[pi]

Answer 1

Treat \(\cos \theta\) as if it were a variable and apply the Quadratic formula.

Answer 2

how so i have beeen struggling wit this question all night

Answer 3

Just as normal.\[\cos \theta = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

Answer 4

and then wer do i go from here its a 6 points question

Answer 5

What do you get as \(\cos \theta\)?

Answer 6

cos theta=-29(-+)square root of 4+108