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A line meets the coordinate axes at A an...

A line meets the coordinate axes at `A` and `B` . A circle is circumscribed about the triangle `O A Bdot` If `d_1a n dd_2` are distances of the tangents to the circle at the origin `O` from the points `Aa n dB` , respectively, then the diameter of the circle is (a)`(2d_1+d_2)/2` (b) `(d_1+2d_2)/2` (c)`d_1+d_2` (d) `(d_1d_2)/(d_1+d_2)`

A

m(m+n)

B

n(m+n)

C

m-n

D

none of these

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The correct Answer is:
D
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OBJECTIVE RD SHARMA ENGLISH-CIRCLES-Exercise
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  19. If the circles (x-a)^(2)+(y-b)^(2)=c^(2) and (x-b)^(2)+(y-a)^(2)=c^(2)...

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