Question

please tell me how to prove this​

Answer 1

Step-by-step explanation:

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hope it helps u

identity used---

${ \cosec( \alpha ) }^{2} - { \cot( \alpha ) }^{2} = 1$

$\cot( \alpha ) = \frac{ \cos( \alpha ) }{ \sin( \alpha ) }$

$\cosec( \alpha ) = \frac{1}{ \sin( \alpha ) }$