Question

cot² A - cos² A = cot² A cos² A​

Answer 1

Yo,

Let's first take the LHS

=cot^2 - cos^2

=cos^2/sin^2 - cos^2

Taking cos^2 common,

=cos^2(1/sin^2 - 1)

=cos^2(cosec^2 - 1)

Using the identity cosec^2 - 1 = cot^2

=cos^2 x cot^2

Hence, proved.

Hope this helps :D

Answer 2

Step-by-step explanation:

the desired answer is in the picture.

HOPE IT HELPS !!