3 years ago

Help me please urgent

1 answer:

5 0

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

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