Question

show that (sin theta+cos theta)² -2sin theta cos theta=1​

Answer 1

Step-by-step explanation:

this is proved that left hand side = right hand side

Answer 2

Step-by-step explanation:

=sin2 theeta +cos2 theeta + 2sin theta cos theta - 2sin theta cos theta

here sin2 theta + cos2 theta =1

and we cancel the values ,2sin theta cos theta - 2sintheta cos theta, so it becomes 0

= 1 - 0

= 1