We have: . .Using Double angle identities
We are given: .
From Pythagorus, we have: .
Substitute into : .
The numerator is the sum of two cubes . . . factor it.Using Pythagorean identities
How do I solve:
Using Double angle identities
1. Find tan2x when secx = sq.root(65); sin x > 0
Using Pythagorean identities
1. [(1+ cot^3 x) / ( 1 + cot x)] + cot x = csc^2 x
Thank you very much for your time! =)