Question 242119: 1. Simplify
a) 1/sin^2x - 1/tan^2x
b)sinxcosx/1-sin^2x
2. Prove that tanx + 1/tanx = 1/sinxcosx
3. Prove that sec^2x - 2secxcosx + cos^2 = tan^2x - sin^2x
4. Prove that 1 + cotxtany = sin(x+y)/sinxcosy
5. Prove that 1-sin2x/cos2x = cos2x/1+sin2x Answer by nyc_function(2741) (Show Source):
You can put this solution on YOUR website! Come one, now! No one is going to answer all these questions. Why not post one question at a time for a faster reply?
Which one do you want me to help you with?