Question

Please answer the given question​

Answer 1

Answer:

3

Step-by-step explanation:

WE KNOW THAT tan²∅-sec²∅=1

AND cosec∅= 1/sin∅

NOW SUBSTITUTE

tan²∅-sec²∅+2sin∅cosec∅

=1+2sin∅×1/sin∅ (sin∅ got cancelled)

=1+2×1

=1+2

=3

THEREFORE THE VALUE IS 3