PM and PN are two tangents of a circle from an external poin

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PM and PN are two tangents of a circle from an external point P, M and N are points on the circle. If PM = y²− 9 and PN = 55, then what is the value of y ?

[SSC CHSL 13th March 2023 Shift-4 With Answers]

A

64

B

17

C

8

D

12

EXPLANATION

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