Question

sin a cosa(tana – cota) = 2 sin?a - 1​

Answer 1

Answer:

sina cosa( tan a - cot a)

=sina cosa(sina/cosa -cos a/sina)

=sin^2a-cos^2a

=-cos2a=-(1-2sin^2a)

=2sin^2a-1

Step-by-step explanation:

hope it helps you