Question

Ex is tangent to circle o at point b what is the measure of

Answer 1

Answer:

$\angle OBZ = 90^\circ$

Explanation:

Given

See attachment

Required

Find $\angle OBZ$

From the attachment, OB is the radius.

OB and BZ meets at Z

The point at which radius OB and tangent BZ is referred to as the point of tangency.

The angle at this point is 90 degrees.

Hence:

$\angle OBZ = 90^\circ$