Question

In the figure, O is the centre of the circle and PC is a tangent.
If PAB=50° then,
a) What is angle BPC?
b) What is angle APC?
c) What is angle PCB?
d) If angle A=x" then, prove that angle C=90-2x
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Answer 1

Answer:

1. angle BPC = 100°

2. angle APC = 180°