MHT CET 2022 Mathematics question

The joint equation of pair of lines through the origin and making an equilateral triangle with the line is

(A)Correct
(B)
(C)
(D)

Answer: (A)

Solution

In an equilateral triangle each angle is . The line is horizontal, so the two lines through the origin make with it, i.e. they are and . Their joint equation is \sqrt\sqrt$3x)=0⇒

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Question ID VK-097018