SOLUTION: line MN is tangent to circle O at point M. What is the measure of angle OMN? http://prntscr.com/s4ymv2

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Question 1156942: line MN is tangent to circle O at point M. What is the measure of angle OMN?
http://prntscr.com/s4ymv2
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

given: line MN is tangent to circle O at point M
as you can see, OM is a radius
use theorem: If a line is tangent to a circle, then it is perpendicular to the radius.
so, the measure of angle OMN=90°