SOLUTION: Can you please help me thanks alot Reduce (csc^ x - sec^ x) to an expression containing only tan x.

The two identities we have involving cosecant and secant are

 and 

Using them we have






Now we can get use the identity  
to get the term in cotangent in terms of tangent:



That's actually good enough there, but maybe your teacher
wants you to combine those terms:










Edwin