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Co - ordinate Geometry Pair of Lines

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The equation of the pair of straight lines, each of which makes an angle α with the line y=x , is

A. x² + 2xy sec 2α + y² = 0

B. x² + 2xy cosec 2α + y² = 0

C. x² - 2xy cosec 2α + y² = 0

D. x² - 2xy sec 2α + y² = 0

E. None of the above

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Correct choice: D

Explanation:

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Eamcet Mathematics Co - ordinate Geometry Pair of Lines

Eamcet Mathematics
Co - ordinate Geometry Pair of Lines