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Co - ordinate Geometry Pair of Lines

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The equation of the pair of straight lines parallel to x-axis and touching the circle x² + y² - 6x - 4y -12 = 0

A. y² - 4y - 21 = 0

B. y² + 4y - 21 = 0

C. y² - 4y + 21 = 0

D. y² + 4y + 21 = 0

E. None of the above

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Correct choice: A

Explanation:

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Eamcet Mathematics Co - ordinate Geometry Pair of Lines

Eamcet Mathematics
Co - ordinate Geometry Pair of Lines