Question

(tan+cot)^2 = sec^2 + csc^2 (working from one side only to get the other side)

Answer 1

\[=\tan^{2}+2tanxcotx+\cot^{2}\]
\[=\tan^{2}+\cot^{2}+2\]
\[=\tan^{2}+1+cot^{2}+1\]

Answer 2

You should remember your Pythagoras identities.

Answer 3

Yes I do, thanks sooo much!