12. In the figure, ZAPB = 90°. Find the length of
OP
1
7 기
А
р
B
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2
Answer:
Given PA=10cm,∠APB=60
o
triangle PAB is an isosceles triangle
So, △OPA is a righgt angled triangle
∠OPA=30
o
Using sine rule,
AO
sin30
o
=
10
sin90
o
AO=5cm
length of the chord AB=2AO=10cm
Step-by-step explanation:
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