Question

In circle P, what is the measure of AB?
AC is a diameter and

Answer 1

I believe the measure of AB is 90 degrees, but I may be wrong.

Answer 2

The measure of AB will be 90°.

Explanation:

In the given circle P we have to measure arc AB.

Since AC is a diameter and BP is perpendicular bisector of AC.

∠APB = 90°

Since this is the angle subtended at the center by inscribed arc AB .

Therefore, by definition length of arc AB will be equal to the ∠APB = 90°

The measure of AB will be 90°.