In the diagram below, if the line AC is tangent to the circle with the center P, then the measure of the angle formed by < PBC is _____.

Given:
A diagram is given as
Find:
we have to find the measure of the angle formed by Explanation:
we know that PB (radius of the circle) is perpendicular to the tangent line AC.
Since, the angle between the radius of the circle and tangent line is 90 degree.
Therefore, the angle PBC is 90 degree.
Therefore, the correct option is D.