Question

Question #99aee

Answer 1

It is not an identity and, therefore, cannot be verified

Explanation:

The following is a graph of the two functions `color(red)(y =sin^2(x) - sin^4(x))` and `color(blue)(y = sin^2(-x) - sec^2(-x))`

If the equation were an identity, the two graphs would share every point but they do not; they do not have a single point in common. That is not to say that there are no solutions; there are but they are complex numbers.