Problem 36
Angle between the planes \(x-y+z=1\) and \(2 x-3 y+z=7\) is ....
Problem 40
The equation of the sphere on the line joining \((1,5,6)\) and \((-2,1,1)\) as diameter is
Problem 49
The intervepts of the plane \(2 x-3 y+z=12\) on the coordinate axes are
Problem 50
The radiur of the sphere whose centre is \((4,4,-2)\) and which pusses throuph the origin is .....
Problem 52
The points \((3,-1,1),(5,-4,2)\) and \((11,-13,6)\) are cellinear.
Problem 53
The plane \(8 x+f y+7 z=110,2 x+3 y-4 z=29\) are perpendicular to each other.
