Recent content by migia

Ok, thank you for your help. I do really appreciate it.

oh i just figured it out. the identity tan^2(x)+1=sec^2(x) all I had to do was move 1 to right and sec^2(x) to the left! Thank you guys for the help too.

yes, it should be sin^2(x)+cos^2(x)=1

Homework Statement The original problem wants me to simplify tan^2(x)-sec^2(x). I have simplified it down to (sin^2(x)-1)/(cos^2(x)). The answer says its solution is -1. My problem is I cannot understand how to get -1 out of (sin^2(x)-1)/(cos^2(x)). Thank you in advance. Homework...