ROBIOX3551
18.09.2019 •
Mathematics
In the diagram below, xy and yz are tangent to o. what is the measure of angle y
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Ответ:
If we draw in OX, OY, OZ we have two congruent right triangles, right angles at the tangent points.
We know XOZ is 132 degrees, which is the meaning of the arc measure
So YOX is half that, 66 degrees.
That leaves 180 - 90 - 66 = 24 degrees for OYX
Angle Y aka XYZ is double that, 48 degrees.
C
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