Question

in the given figure angle QAB =40° ,then find the measure of angle ACB​

Answer 1

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OA = OB ( RADII OF THE SAME Circle )

Angle OBA = 40degree

In Triangle OAB by asp

AngleAOB = 180 - 80 = 100

We know angle 2ACB = Angle AOB

ACB = 100 ÷ 2 = 50 degree