Question

Find the value of cot^A - 1/sin^A

Answer 1

cot a = cos a / sin a

so putting this in the question :

cos a / sin a - 1/ sin a

taking sin denominator as common

cos a -1 / sin a

it is the answer above or when squared

1 - cos2a/ sin2 a

sin2 a / sin2 a = 1

therefore the answer to your question is cos a - 1 / sin a or 1

byee