The angle between the two planes 3x-4y+5z = 0 and 2x-y-2z = 5 is
π/3
π/2
π/6
π/4
None of these
The angle between two lines
cos -1 ( 1/9 )
cos -1 ( 2/9 )
cos -1 ( 3/9 )
cos -1 ( 4/9 )
The line is parallel to the plane.
2x + y - 2z = 0
3x + 4y + 5z = 7
x + y + z = 2
2x + 3y + 4z = 0
The distance of the point ( 2, 3, - 5 ) from the plane x + 2y - 2z = 9 is
4
3
2
1
If α ,β, γ are the angles which a half ray makes with the positive directions of the axes , then
sin2α + sin2β + sin2γ =
-1
0
The direction cosines of a line equally inclined with coordinate axes are :
( 1, 1, 1 )
( 1, 0, 0 )
( 0, 1, 0)
Education of aplane parallel to x - axis is ______.
ax + by + cz + d = 0
by + cz + d = 0
ax + by + d = 0
ax + cz + d = 0
Parallel
Coincident
Skew
Perpendicular
