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dsp73
3 years ago
10

Help me please urgent

Mathematics
1 answer:
Rom4ik [11]3 years ago
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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