# Math Help - Trig Equations

1. ## Trig Equations

How would you solve cos^2(x) = 1/4

2. Originally Posted by CenturionMonkey
How would you solve cos^2(x) = 1/4
$\cos^2 x = \frac 14 \implies \cos x = \pm \frac 12$ now what values of x cause that to happen?

3. how would you go about solving

tan2(x) = 8cos^2(x) - cot(x), domain is 0 to 360

4. Originally Posted by CenturionMonkey
how would you go about solving

tan2(x) = 8cos^2(x) - cot(x), domain is 0 to 360

begin by changing everything to sines and cosines and see where you can go from there

5. hey thanks, but actually i got it a different way, i was doing some simple multiplication wrong. lol. I hate how when you're doing something challenging you tend to undermine the simple stuff. heh.