posted by Chip on .
If all the vertices of a triangle are on the circle and one side of the triangle is the diameter of the circle it is a right angle. Find the length of the diameter (AC) if Ab =8 and BC = 15.
The diameter is the longest side, and the longest side of a rt. triangle is
(AC)^2 = 8^2 + (15)^2 = 289,
AC = 17.
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