Test: Introduction To 3D Geometry - JEE MCQ

If the direction cosines of a line from the positive X-axis and Y-axis areThe angle of the line through Z-axis is:​

The direction cosines of the line equally inclined with the axes are:​

The direction cosines of the line whose direction ratios are 6, – 6, 3 are:

Find the direction cosines of the x axis.​

The direction cosines of the line joining the points (2, -1, 8) and (-4, -3, 5) are:

What are direction numbers of a line.​

What are direction ratios of a line.​

Find the direction cosines of the side AB of the triangle whose vertices are A(3, 5, -4), B(-1, 1, 2) and C(-5, -5, -2)

If l, m , n are the direction cosines of any line, then sum of the squares of the direction cosines of the line is always​

If a line has the direction ratios -4, 18, -12 then what are its direction cosines?​

The direction cosines of the line equally inclined with the axes, are:​

If a line makes angles 45°,150°, 135°, with x, y and z-axes respectively, find its direction cosines.

Find the equation of the set of points which are equidistant from the points (1, 2 , 3) and (3, 2, -1)​

If a line in the ZX-plane makes an angle 60o with Z-axis, the direction cosines of this line are:

A line makes angles α, β, γ with the positive directions of X-axis, Y-axis and Z-axis, respectively, then the directions cosines of the line are:

The signs of the X,Y and Z coordinates of a point that lies in the octant OXYZ’ is​

If a line in the ZX-plane makes an angle 30o with Z-axis, the direction cosines of this line are: