Question

find the value of 1+cos theta + sin theta / 1- cos theta + sin.theta​

Answer 1

Answer:

1-cos theta/sin theta = sin theta /1+ cost

theta

cross multiplying

(1-cos theta )(1+cos theta)=(sin theta )(sin

theta)

Here (a + b)(a - b) = a ^ 2 - b ^ 2 is used

so,1^2-costheta^2=sin theta^2 1-costheta^2=sintheta^2

By identity 1

sin ^2=1-cos^2