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← JEE Main 2022 · 30 Jun · Shift 1
MathematicsSingle correct+4 / -1Question 13 of 90

JEE Main 2022 · 30 Jun · Shift 1, Mathematics question 13

Let α1,α2\alpha_1,\alpha_2 (α1<α2)(\alpha_1<\alpha_2) be the values of α\alpha for the points (α,−3)(\alpha,-3), (2,0)(2,0) and (1,α)(1,\alpha) to be collinear. Then the equation of the line, passing through (α1,α2)(\alpha_1,\alpha_2) and making an angle of π3\dfrac\pi3 with the positive direction of the xx-axis, is :

Choose one option
Answer and worked solution

Official answer: B

Collinear. α(α−2)=3\alpha(\alpha-2)=3: α=−1,3\alpha=-1,3.

Line through (−1,3)(-1,3) with slope 3\sqrt3: 3x−y+3+3=0\sqrt3x-y+\sqrt3+3=0.

(B)