-13/4
-17/4
4
None of these
If the direction ratios of a line are 1,-3,2 ;then its direction cosines are
1/√14 , -3/√14 ,2/√14
1/√14 , 2/√14 , 3/√14
-1/√14 , 3/√14 , -2/√14
-1/√14 , -2/√14 , -3/√14
Parallel
Coincident
Skew
Perpendicular
A point (x.y.z) moves parallel to XY plane Which of three variables x,y,z remain fixed
z
x
y
x and y
the angle between the two planes 3x-4y+5z =0 and 2x-y-2z=5 is
π/3
π/2
π/6
π/4
The direction ratios of the line x-y+z-5=0 and x-3y-6=0 are
3,1,-2
2,-4,1
3/√14, 1/√14 ,-2/√14
2/√41 , -4/√41 , 1/√41
-10
10/7
-10/7
-7/10
L is parallel to π
L is perpendicular to π
L lies in π
If A(1,2,3) , B(-1,-1,-1) be the points ,then the distance AB is
√5
√21
√29
The cosine of the angle between any two diagonals of a cube
1/3
1/2
2/3
1/√3
