Question

If cot is equal to 7 by 8 evaluate 1 + sin theta 1 - sin theta by 1 + cot theta 1 - cos theta

Answer 1

Answer:

(1+sinΦ)(1-sinΦ)/(1-cosΦ)(1+cosΦ)

1 - sin^2Φ/1-cos^Φ

cos^2Φ/sin^Φ

cot^Φ

(7/8)^2 = 49/64