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Question

If one end of a diameter of the circle x2+y24x6y+11=0 is (3,4), then find the coordinate of the other end of the diameter.

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Solution

Given
x2+y24x6y+11=0
(x2)2+(y3)2=2
(2,3) is center of circle and P(2,3)and Q(3,4) lies on same line
Eqn of line passing through P & Q is y = x+1.
Here m=1=tanθθ=π/4
R1[2cosθ+2,3+2sinθ]=3,4
R2[2cosθ+2,32sinθ]=(1,2)
co-ordinate of other end of diameter is (1,2)

1118842_1202321_ans_57c40746f53b4dc8a22b0622a8523a15.jpg

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