Question

the value of the expresseion (sec²Φ-1)(1-cosec²Φ)is​

Answer 1

Step-by-step explanation:

sec^2Φ-1=cos^Φ

and

1-cosec^Φ=cot^Φ

now

put value in equation

i. e,...

cos^Φ*cot^Φ