Q.
A circle is described on the line joining the points (2,−3) and (−4,7) as a diameter
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a
passes through the origin
b
touches the axis of x.
c
touches the axis of y
d
origin lies inside the circle
answer is D.
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Detailed Solution
Equation of the circle is (x−2)(x+4)+(y+3)(y−7)=0⇒x2+y2+2x−4y−29=0Centre is (1, – 2), radius =34Distance of the centre from the origin is 5<34
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