15 6pts State the 3 variations of the double angle identity

Last updated: 3/22/2023

15 6pts State the 3 variations of the double angle identity for cosine a Cos 2x b Cos 2x c Cos 2x 16 15 pts 3 each a Find the exact value sin 18 cos 27 cos 18 sin 27 b Find the exact value sin c Find the exact value cos d Find the exact value tan 1 A 1 e State the Pythagorean identity tan 0 1