SOLUTION: Please help me with this problem. Find an expression that completes the identity. (2sin^2(x)+cos2(x))/(sec(x)) = ??

Algebra ->  Trigonometry-basics -> SOLUTION: Please help me with this problem. Find an expression that completes the identity. (2sin^2(x)+cos2(x))/(sec(x)) = ??      Log On


   

Question 95482: Please help me with this problem.
Find an expression that completes the identity.
(2sin^2(x)+cos2(x))/(sec(x)) = ??
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
cos2(x)=1-2sin^2(x) (double angle formula)
2sin^2(x)+1-2sin^2/sec(x)=1/sec(x)=cos(x)
EdJones