Question

prove that sin² thita +1 +cos² thita equal 2​

Answer 1

Answer:

sin²θ+1+cos²θ=2.

Consider the LHS.

sin²θ+1+cos²θ

Rearrange the terms.

sin²θ+cos²θ+1

We know that sin²θ+cos²θ=1. So, we can change the above equation as:

⇒1+1

⇒2 = LHS.

HOPE THIS HELPS :D