JEE Main 2013 — Straight Lines Questions with Solutions

The x - coordinate of the incentre of the triangle that has the coordinates of midpoints of its sides as   0 , 1 ,…

If two lines L₁ and L₂ in space, are defined by aligned & L₁=\x=√(λ) y+(√(λ)-1), \ & z=(√(λ)-1) y+√(λ) and \ & L₂=\x=√(…

If the three lines x-3 y=p, a x+2 y=q and a x+y=r form a right-angled triangle then :

A ray of light along x + 3 y = 3 gets reflected upon reaching X - axis, the equation of the reflected ray is

The acute angle between two lines such that the direction cosines l, m, n, of each of them satisfy the equations l+m+n=…

Let x (0,1). The set of all x such that ⁻¹ x> ⁻¹ x, is the interval:

If the x-intercept of some line L is double as that of the line, 3 x+4 y=12 and the y-intercept of L is half as that of…

A light ray emerging from the point source placed at P(1,3) is reflected at a point Q in the axis of x. If the reflecte…

If the image of point P(2,3) in a line L is Q(4,5), then the image of point R(0,0) in the same line is:

Let θ₁ be the angle between two lines 2 x+3 y+ c₁=0 and -x+5 y+c₂=0 and θ₂ be the angle between two lines 2 x+3 y+c₁=0…