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Co - ordinate Geometry Circles

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If the line x=k touches the circle x²+y²=9, then the value of k is

A. 2 but not – 2

B. – 2 but not 2

C. 3

D. 4

E. None of the above

View Answer

Correct choice: C

Explanation:

k = 3, as perpendicular from centre on line = radius.

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Eamcet Mathematics Co - ordinate Geometry Circles

Eamcet Mathematics
Co - ordinate Geometry Circles