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Prove that (cotA-cosA)/(cotA+cosA)=(c o ...

Prove that `(cotA-cosA)/(cotA+cosA)=(c o s e cA-1)/(c o s e cA+1)`.

Text Solution

Verified by Experts

Given,
L.H.S
`(cotA-cosA)/(cotA+cosA)= ((cosA/sinA)-cosA)/((cosA/sinA)+cosA)`
`= [cosA((1/sinA)-1)]/[cosA((1/sinA)+1)]`
...
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