Question

cosec^2a - sin^2 a
cosec²a.2-cos²a​

Answer 1

Step-by-step explanation:

I.h.s

=1+1-SIN^2^2A/SIN^2A

=1+ SIN^2A/SIN^A R.H.S

=2COSEC^2A-1 =COSEC^2 + COSEC^2A-

=COSEC^2 +COT^2A

= 1 +COT^2 +COT^2A %3D

=1+2COT^2A

=1 + SIN^2A/SIN^A