To make things simpler perhaps, I would suggest letting where and so the equation becomes:
I would suggest using the double-angle identity for cosine this was you will obtain a quadratic in which factors nicely.
Can you proceed?
Can someone help explain to me how to use a Double- or Half-Angle Formula to solve the equation in the interval [0, 2π). I have tried for some time and have been having quite of bit of difficulty on figuring out how to proceed. Any input will be sincerely appreciated.
To make things simpler perhaps, I would suggest letting where and so the equation becomes:
I would suggest using the double-angle identity for cosine this was you will obtain a quadratic in which factors nicely.
Can you proceed?