(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Prove:

cotAcotB=(cscB+cotA)/(tanAsecB+tanB)

2. Relevant equations

cotx=1/tanx, etc.

I tried using pythagorean identities, like 1+cot^{2}x=csc^{2}x, and others, but I've been unable to solve the problem.

3. The attempt at a solution

Please help me out. The examples in my text book don't seem very useful here. I've tried everything I could think of.

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# Trig proof with two angles and many functions

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