You will need to use the angle sum identity at least twice. Also Exact trigonometric constants - Wikipedia, the free encyclopedia will help you.
Hello all,
I'm trying to determine how one would solve the below problem without a calculator or a table. None of the angles are ones I easily recognize - how can I solve it?
These are given in degrees, not Rads
Thank you for all of your brilliant help!
You will need to use the angle sum identity at least twice. Also Exact trigonometric constants - Wikipedia, the free encyclopedia will help you.