Question

is(1+cot^2 theta)(1-cos theta)(1+cos theta)=1 or not verify​

Answer 1

Answer:

(1+cot^2theta)(1-cos theta)(1+cos theta)

(1+cot^2theta)(1-cos^2theta)

(cosec^2theta)(sin^2theta)

1/sin^2theta×sin^2theta

1 [Proved]

Formula used=cosec^2theta-cot^2theta=1

sin^2theta+cos^2theta=0