Question

(sec²a-1)(cosec²-1)=1​

Answer 1

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Answer 2

HOPE THIS HELPS YOU,

=1

SOLVING LEFT HAND SIDE,

(sec^2a-1)(cosec^2a-1)

(tan^2a)(cot^2a)

$( \frac{ \sin(a) }{ \cos(a) } )( \frac{ \cos(a) }{ \sin(a) } )$

cutting, you get 1=right hand side

LHS=RHS

HENCE PROVED