Question

find the value of cot square theta minus 1 aupon sin square thetafind the value of cos squared theta minus one upon sin square theta

Answer 1

$\sf{cot^2 \theta - {\dfrac{1}{sin^2 \theta}}}$

${\boxed{\sf{cosec^2 \theta = {\dfrac{1}{sin^2 \theta}}}}}$

= $\sf{cot^2 \theta - cosec^2 \theta}$

${\boxed{\sf{cot^2 \theta + 1 = cosec^2 \theta}}}$

= - 1