- #1

ibysaiyan

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## Homework Statement

Hi all , again i am stuck onto this question :( , tried over 3 sheets alone on it lol.btw. thanks for your replies ;) .

Prove the Identity (cosecA+cotA)^2 similar to 1+cosA/1-cosA

## Homework Equations

hmm let's see.. sin2+cos2=1 ,

sec2= 1+tan2

cosec2= 1+cot2, cot=1/tanx= cosx/sinx

## The Attempt at a Solution

i started off my expanding brackets:

=> cosec2A+cot2A+2cosecAcotA

and the rest well =/ no idea.. i couldn't prove them, just had a thought while typing can't i like sub . some value before expanding them ? ooh =/