Question

cot^2theta - 1/sin^2theta

Answer 1

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$= > \cot {}^{2} (\theta) - \frac{1}{ \sin {}^{2} (\theta) }$
$= > \cot {}^{2} (\theta) - \cosec {}^{2} (\theta)$
$= > - ( \cosec {}^{2} (\theta) - \cot {}^{2} (\theta) )$
$= > - (1)$
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Answer 2

Cot^2theta-cosec^2theta

(cosec square theta-cot square theta =1)

cot square theta -cosec square theta =-1

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