In the figure ab and cd are common tangents
Asked by admin @ in Math viewed by 348 People
In Fig. 9.13, AB and CD are common tangents to two circles of unequal radii. Prove that AB = CD.
Answered by admin @
Just draw another tangent AD.
Now consider tangents AD & DC.
Since lenghts of tangents from an external point to a circle is equal,
AD = CD ---------[1]
Similarly, AD = AB ---------[2] ( with the same reason) .
Now from [1] & [2]
AB = CD
Hence proved.
Please mark it breanliest pleeeeaseeeee.
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