Question

The value of cosec2 63-cot2 63 is​

Answer 1

$\csc {}^{2} ( {63}) - \cot ^{2} (63)=1 \\ \\ or \\ \\ \csc {}^{2} ( {63}) - \cot ^{2}(63) \\ = \frac{1}{ \sin {}^{2} (63) } - \frac{ \cos {}^{2} (63) }{ \sin {}^{2} ( {63}^{} ) } \\ = \frac{1 - \cos {}^{2} (63) }{ \sin {}^{2} (63) } \\ = \frac{ \sin {}^{2} (63) }{ \sin {}^{2} ( {63}^{} ) } \\ = 1$