3-d

Related Questions

• The equation of the plane which bisects the line joining the points (–1, 2, 3) and (3, –5, 6) at right angle, is

  ---

• If the sum of the squares of the distance of a point from the three co-ordinate axes be 36,then its distance from the origin is

  ---

• If a line makes angles $\alpha ,\beta ,\gamma ,\delta $ with four diagonals of a cube, then the value of ${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +$ ${{\sin }^{2}}\gamma +{{\sin }^{2}}\delta $ is

  ---

• The angle between two lines $\frac{x+1}{2}=\frac{y+3}{2}=\frac{z-4}{-1}$ and $\frac{x-4}{1}=\frac{y+4}{2}=\frac{z+1}{2}$ is

  ---

• If the co-ordinates of the points $P,\,Q,R,\,S$ be (1, 2, 3), (4, 5, 7), (– 4, 3, – 6) and (2, 0, 2) respectively, then

  ---