Engineering homework help

Engineering homework help. 1) Factor the expression then use fundamental identities to simplifyCos^2xsec^2x-cos^2×2) Perform the subtraction then use the fundamental identities to simplify a)  1/secx+1 – 1/secx-1 b)  tanx- sec^2x/tanxReally need help understanding how to do these problems?

Engineering homework help