If a line makes anles `alpha, beta, gamma` with the coordinate axes, porve that `sin^2alpha+sin^2beta+sin^2gamma=2`

A line makes angles alpha, beta, gamma, delta with the diagonals of a cube, prove that cos^2alpha + cos^2beta + cos^2gamma + cos^2 delta = 4/3

If a line makes angles alpha,beta,gamma with x-axis and z-axis respectively, then sin^(2)alpha+sin^(2)beta+sin^(2)gamma=

If a line makes an angle alpha, beta, gamma with x axis, y axis and z axis , then : sin^2 alpha+ sin^2 beta+ sin^2 gamma =.......

A line makes angles alpha,beta and gamma with the coordinate axes. If alpha+beta=90^0, then find gamma .

State whether it is true or false:If a line makes angles alpha, beta, gamma which positive direction of axes then cos 2alpha+ cos 2beta+cos 2gamma=1 .

If a vector makes angles alpha, beta, gamma with x, y and z axes respectively, then cos alpha, cos beta, cos gamma are known as: