Question

Prove that cosec a/ cosec a-1 + cosec a/ cosec a+1= 2 sec squara a

Answer 1

take lhs

Coseca/coseca-1+coseca/coseca+1

=(coseca)(coseca+1)+(coseca)(coseca-1)/cosec square a-1

=cosec square a+coseca+cosec square a-coseca/cot square a

[Since,cosec spuare a-1=cot square a]

=2cosec square a/cot square a

=2/sin square a/cos square a/sin square a

= 2/cos square a

=2sec square a

=rhs

Answer 2

Answer:

Step-by-step explanation:

Here comes the answer.....