If x-coordinate of a point P on the line joining the points Q(2, 2, 1) and R(5, 1, - 2) is 4, then the z-coordinate of P is
- 2
- 1
1
2
The equation of the sphere through the points (1, 0, 0), (0, 1, 0) and (1, 1, 1)and having the smallest radius
The perpendicular distance from the point to the line joining (1, 00) and (in polar coordinates) is
2
1
If the equation to the locus of points equidistant from the points (- 2, 3), (6, - 5) is ax + by + c = 0, where a > 0, then the ascending order of a, b, c is
a, b, c
c, b, a
b, c, a
a, c, b
If the point P on the curve, 4x2 + 5y2 = 20 is farthest from the point Q(0, – 4), then PQ2 is equal to :
29
48
21
36
Let AD and BC be two vertical poles at A and B respectively on a horizontal ground. If AD = 8 m, BC = 11 m and AB = 10 m; then the distance (in meters) of a point M on AB from the point A such that MD2 + MC2 is minimums is ___