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+1 vote
76.1k views
in Mathematics by (69.2k points)

Three circles of radii a, b, c (a < b < c) touch each other externally. If they have x-axis as a common tangent, then

(1)   a, b, c are in A.P

(2)   1/√b = 1/√a + 1/√c

(3)  1/√a = 1/√b + 1/√c

(4)   √a, √b, √c are in A.P.

1 Answer

+2 votes
by (73.2k points)
selected by
 
Best answer

Correct option  (3)  1/√a = 1/√b + 1/√c

Explanation:

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