Question

cot(θ)sec(θ)=csc(θ) verify identity

Answer 1

cot() = adj/opp, sec() = hyp/adj, csc() = hyp/opp. This would become \[LHS = \frac{ adj * hyp }{ opp * adj }\] and \[RHS = \frac{ hyp }{ opp } \]
Cancel out adj from the left side, and now both sides are identical.

Answer 2

can you do it with tan sine and cosine

Answer 3

9

Answer 4

Open a new question for a separate question please. (or next time, ask all of your questions in 1 question)