The radius of two circles is 3 cm and 4 cm. The distance between their centers is 10 cm. What is the radio of the length of direct common tangent and transverse common tangent?
Explanation:
Direct Common Tangent = d2-(R-r)2 = 102-(4-3)2 = √99
Transverse Common Tangent = d2-(R+r)2 = 102-(4+3)2 = √51
∴ Required ratio = √99 : √51 = √33 : √17
Hence, option (b).
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