Question

(ii) (1 - cos A) (1 + sec A) = tan A sin A.

Answer 1

Step-by-step explanation:

(1-CosA)(1+1/CosA)=(SinA/CosA)SinA

(1-CosA)(CosA+1/CosA)=(sin^2A/CosA)

(1- cos^2A)/CosA=sin^2A/CosA

sin^2A/CosA=sin^2A/CosA

hence proved