The angle between the planes 2x - y + z = 6 and x + y + 2z = 7 is
π
2π/3
π/2
π/3
The cosine of the angle between any two diagonals of a cube
1/3
1/2
2/3
1/√3
-10
10/7
-10/7
-7/10
Parallel
Intersecting
Skew
Coincident
The angle between two lines
cos -1 ( 1/9 )
cos -1 ( 2/9 )
cos -1 ( 3/9 )
cos -1 ( 4/9 )
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
The angle between the two planes 3x-4y+5z = 0 and 2x-y-2z = 5 is
π/6
π/4
The direction cosines of a line equally inclined with coordinate axes are :
( 1, 1, 1 )
( 1, 0, 0 )
( 0, 1, 0)
The intercept of the plane 5x - 3y + 6z = 60 on the co - ordinate axes are
( 10, 20, -10 )
( 10, -20, 12 )
( 12, -20, 10 )
( 12, 20, -10 )
The equation of the plane through the origin and parallel to the plane. 3x - 4y + 5z - 6 = 0 is.
3x - 4y + 5z + 6 = 0
3x + 4y - 5z + 6 = 0
3x - 4y - 5z - 6 =0
3x - 4y + 5z = 0.