Question

explore the principal value of the function sin^-1 x using a unit circle

Answer 1

Answer:

What is sin−1 ½?

We know that sin (30°) = ½.

⇒ sin−1 (1/2) = 30° or

π

6

Again, sin θ = sin (π -

π

6

⇒ sin θ = sin (

5π

6

⇒ θ =

5π

6