Question

The simplified value of 1 - (sin square A/ (1+cOS A)) + ((1+cOS A)/ sin A) - (sin A/(1-COS A)) is

(a) cos A (b) o (C) 1 (d) sin 1​

Answer 1

1-sin squareA:cos squareA

cos squareA/1+cosA+1+cosA/sinA-sinA/1-cosA

cancellation

cos squareA/1+cosA

cosA/1*cosA/cosA

cancel cosA/cosA

remaining

cosA/1

cosA

answer

a)cosA