Question

(1 - Cos square A) cosec square A = 1​

Answer 1

$\purple{\huge{\bold{\mathcal{Answer}}}}$

$1 - \cos {}^{2} (a) \times \cosec {}^{2} (a) = 1 \\ \sin {}^{2} ( a ) \times \cosec {}^{2} (a) = 1 \\ \sin {}^{2} (a ) \times \frac{1}{sin {}^{2} (a)} = 1 \\ 1 = 1$

Answer 2

${sin}^{2} \times {cosec}^{2} = 1$