How do you prove the identity #Sec^2(x) + 2 cos(x) + 1/2*csc^2(x) = 5 #?
1 Answer
Nov 9, 2015
It doesn't look like an identity to me. To prove that it is an identity, you should prove that the equality holds for every
The most you can do, in this case, is solve the equation, which means to find the values of
