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Two circles touch externally at P. A dir...

Two circles touch externally at P. A direct common tangent AB to two circles touch the circles at A and B. Then the measure of `angleAPB` is

A

`90^@`

B

`75^@`

C

`60^@`

D

`45^@`

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UNITED BOOK HOUSE-Theorems related to Tangent to a Circle-Exercise
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