Find the angle between any two diagonals of a cube.

Find the angel between any two diagonals of a cube.

(i) Find the angle bewteen the lines whose direction ratios are 1, 2, 3 and - 3 , 2 , 1 (ii) Find the angle between two diagonals of a cube.

Show that the angle between two diagonals of a cube is cos^(-1)(1/3)dot

Show that the angle between two diagonals of a cube is cos^(-1)sqrt(1/3)dot

An ellipse is inscribed in a reactangle and the angle between the diagonals of the reactangle is tan^(-1)(2sqrt(2)) , then find the ecentricity of the ellipse

Construct a rectangle ABCD, when : One diagonal = 6.0cm and the acute angle between the diagonals = 45^(@) .

The angle between diagonal of a cube and diagonal of a face of the cube will be

The shortest distance between a diagonal of a unit cube and the edge skew to it, is

Three metal cubes with edges 6cm , 8cm and 10cm respectively are melted together and formed in to a single cube. Find the diagonal of this cube.

If theta is the angle between any two vectors veca and vecb , then |veca.vecb|=|veca xx vecb| when theta is equal to