(-tan^2(x)-1)/(sec^2(x))
what is a simplified version without tan, the system i am using wont allow me to have tan in
(-tan^2(x)-1)/(sec^2(x)) =
-(tan^2 (x) + 1) (sec^2(x) ) =
- (sec^2 (x) )(sec^2 (x) =
-sec^4(x)
