a line makes angles a,b,c,d with the diagonals of a cube, prove that: cos2a + cos2b + cos2c + cos2d - Maths - Three Dimensional Geometry

Question

a line makes angles a,b,c,d with the diagonals of a cube, prove
that:
cos2a + cos2b + cos2c +
cos2d =4/3

Pooja · Accepted Answer

Kindly refer the following link :

https://www meritnation
com/ask-answer/question/a-line-makes-angles-alpha-beeta-gama-and-delta-with/three-dimensional-geometry/6722652

a line makes angles a,b,c,d with the diagonals of a cube, prove that:cos2a + cos2b + cos2c + cos2d =4/3