JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

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The slope of a line is 3 times the slope of the other line and the tangent of the angle between them is

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, sum of their slopes is equal to

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Correct option: D

Option D (8) is correct because solving the tangent of the angle between two lines equation leads to two possible values for the slopes, and one of them results in the sum of slopes being 8.

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a x^2+2 h x y+b y^2+2 g x+2 f y+c=0

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is If the pair of lines represented by

a x^2+2 h x y+b y^2+2 g x+2 f y+c=0

intersect on

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is equal to the product of the slopes, then

\lambda

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represents a pair of straight lines passing through the origin. The two lines are The value of

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3 x^2-3 h x y+4 y^2=0

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