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Angle C is inscribed in circle O.
AB is a diameter of circle O.
What is the measure of ZB?

 

 Apr 27, 2020
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Angle(C) is inscribed in a semi-circle, therefore, it has 90o.

Since angle(A) has 71o, angle(B)  =  180o - 90o - 71o.

 Apr 27, 2020

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