Question

(1-cosA)÷sinA=sinA÷(1+cosA). Prove it.

Answer 1

Step-by-step explanation:

since we know that

${ \sin( \alpha ) }^{2} + { \cos( \alpha ) }^{2} = 1$

cross multiply the question

then {1-cos(a)}{1+cos(a)}=(sina)(sina)

1-cos^2a=sin^2a

Sin^2a+cos^2a=1

hence proved