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The diameter of the nine point circle of the triangle with vertices (3, 4), (5 cos Ө,5 sin Ө)and (5 cos Ө,5 sin Ө) ER is .

Sub Grade: 9

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answer is D.

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Detailed Solution

Ro = 2 R
Given points lie on circle of radius = 5
Radius of 9 points circle = 5/2
Diameter = 5/2*2
0=5

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