Question

(1+tan^2 theta)(1-sin theta)(1+sin theta)=1

Answer 1

Step-by-step explanation:

LHS

(1+tan^2 theta)(1-sin theta)(1+sin theta)

since

(1 + x)(1 - x) = 1 - x^2

so

sec^2x (1 - sin^2x)

cos^2x/cos^2x

1

Hence LHS = RHS

Answer 2

Step-by-step explanation:

your solution is attached with the picture.....