for each step. For the remaining problems, verify the given identity. Show your steps clearly, and give a justification sec 0 - tan 0 = 1-sing CO5 0 2.) 2 sin' x - 2 sin x - sin 2x cosx 3. sin 0 - cos 2 0 = (2 sin 0- 1) (sin 0 +1) / sin(x+y)+sin(x-y) = tan x cos(x+y)+cos(x-y)