Question

prove that 1-cos A/1+cos A= ( cosec A- cot A ) ^ 2

Answer 1

(1-cosA)/(1+cosA)
=(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

Answer 2

Answer:

Hope this will help ...!!!