1-cosA/(1+cosA) value?

1 Answer
May 6, 2018

It is (cosec A-cot A)^2

Explanation:

At first multiply and divide this with (1-cos A)

(1-cosA)/(1+cosA)*(1-cosA)/(1-cosA)
=(1-cosA)^2/(1-cos^2A)
=(1-cosA)^2/sin^2A
=(1/sinA-cosA/sinA)^2
=(cosecA-cotA)^2