ive been tryn for abt an hour now nd cant seem to figure it out:
if 2ptanx+1=p, determine the value of cosx in terms of p
note that this means $\displaystyle \tan x = \frac {p - 1}{2p}$ (note that p cannot be zero, so this makes sense).
Recall that $\displaystyle \tan x = \frac {\sin x}{\cos x} = \pm \frac {\sqrt{ 1 - \cos x}}{\cos x}$
plug this into the first equation and solve for $\displaystyle \cos x$. This is pretty much all the help you can get since this is a graded assignment.