Question

The value of the expression [(sec²∅-1)(1-cosec²∅)]

Answer 1

Note- Tan²∅=sec²∅-1 & Cosec∅=1/Sin²∅

ACCORDING TO THE QUESTION.....

(Sec²∅-1)(1-cosec²∅)= (Tan²∅)(1-1/sin²∅)

=Tan²∅(Sin²∅-1/Sin²∅)

=Tan²∅(Cos²∅/sin²∅)

=Sin²∅/Cos²∅ (Cos²∅/sin²∅)

=Cancel Both

=1

PLS MARK BARINLIEST