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ABC is an isosceles triangle and AC, BC ...

ABC is an isosceles triangle and AC, BC are the tangent at M and N respectively. DE is the diameter of the circle. `angleADP=angleBEQ=100^(@)`. What is the value of `anglePRD`?

A

`60^(@)`

B

`50^(@)`

C

`20^(@)`

D

`20^(@)`

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The correct Answer is:
C
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