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Q.

How many common tangents can be drawn when one circle is completely inside another circle?

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a

infinite

b

two

c

one

d

zero

answer is C.

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Detailed Solution

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A line touching two circles at a particular point is called a common tangent. As no line is touching two circles at a particular point, there are no common tangents.

Therefore, no common tangents can be drawn if one circle is completely inside another circle.

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