The point which divides the line joining the points (2,4,5) and (3,5,-4) in the ratio -2:3 lies on
ZOX-plane
XOY-plane
YOZ-plane
None of these
If α ,β, γ are the angles which a half ray makes with the positive directions of the axes , then sin2α + sin2β + sin2γ =
1
2
-1
0
The direction cosines of any normal to the XY-plane are
(1,0,0)
(0,1,0)
(1,1,0)
(0,0,1)
00
300
450
900
The equation of a plane which cuts equal intercepts of unit length on the axes ,is
x+y+z = 0
x+y+z = 1
x+y-z = 0
x/a + y/a + z/a = 1
Parallel
Intersecting
Skew
Coincident
If A(1,2,3) , B(-1,-1,-1) be the points ,then the distance AB is
√5
√21
√29
L is parallel to π
L is perpendicular to π
L lies in π
Perpendicular
