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AB is a chord of a circle with centre O with radius 17cmIf AB equals 16cm find the distance of O from AB?
Wiki User
∙ 13y ago
The perpendicular from O meets AB at P which is the midpoint of AB.
In the right angled triangle OAP, angle P is 90 deg,
OA = radius = 17 cm
and AP = 0.5*AB = 8 cm
So OP2 = OA2 - AP2 = 172 - 82 = 289 - 64 = 225
OP = 15 cm
Wiki User
∙ 13y ago
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