I am taking a precalc class and am having trouble when it comes to solving trig equations. Our book does not do a very good job on explaining and I have been unable to find any examples or similar problems to the following:
find all solutions ofin the interval [0,2pie) x representing theta.
cos(2x)=squareerootof 2 -cos(2x)
If anyone could explain the steps and how to solve these it would be greatly appreciated.