Question

prove that 1 + Cos A/ sin a is equals to Sin A/ 1 - cos A​

Answer 1

Answer:

Step-by-step explanation:

1+cosA/sinA

Rationalising we get

(1+cosA)/sinA×(1-cosA)/(1-cosA)

(1-cos^2A)/sinA(1-cosA)

sin^2A/sinA(1-cosA)

sinA/(1-cosA)