Help me please urgent

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asked Feb 28, 2019 88.9k views

1 Answer

Mikemeli · Answer 1 · 2019-03-06T14:55:44+0000

BA is tangent to circle O to BA perpendicular to OA
given :BA = 15, OB = 17

a^2 = c^2 - b^2
a^2 = 17^2 - 15^2
a^2 = 289 - 225
a^2 = 64
a = 8

OA = OC = 8

answer
radius of circle O = 8

Help me please urgent

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