Question

Sin^2theta+sin^2(90-theta)= ?

Answer 1

sin (90- Ø)= cos theta

sin^(90- theta)= cos^ theta

sin^theta + cos^theta= 1 (identity)

Answer 2

Answer:

1

Step-by-step explanation:

sin²theta+sin²(90-theta)

sin²theta+cos²(90-90-theta)      [sin(90-theta)=cos theta]

sin²theeta+cos²theeta=1             [sin²theta+cos²theta=1]