If `alpha, beta and gamma` are the angles which the vector `vec(OP)` (O being the origin) makes with positive direction of the coordinate axes, then which of the following are correct?

If alpha, beta and lambda are the angles which the vector vec(OP) (O being the origin ) makes with positive direction of the coordinate axes, then which of the following are correct? 1. cos^(2) alpha + cos^(2) beta = sin^(2) lambda 2. sin^(2) alpha + sin^(2) beta=cos^(2)lambda 3. sin^(2) alpha + sin^(2)beta + sin^(2)lambda=2 Select the correct answer using the code given below.

If alpha, beta and gamma are angles which he vector vec(OP) (O being the origin) makes with positive direction of the coordinte axes, then which of the following are correct? 1. cos^(2) alpha + cos^(2) beta = sin^(2) gamma 2. sin^(2) alpha + cos^(2)beta= cos^(2)gamma 3. sin^(2) alpha + sin^(2) beta + sin^(2) gamma =2 Select the correct answer the using the codes given below:

If alpha, beta and gamma be the angle made by the vector 3bar(i)-6bar(j)+2bar(k) with the positive direction of the coordinate axes, then find cos alpha, cos beta, cos gamma .

If alpha , beta , gamma are the angles which a directed line makes with the positive directions of the co-ordinates axes,then sin^(2)alpha+sin^(2)beta+sin^(2)gamma is equal to

If alpha, beta, gamma are the angles made by a line with the positive directions of the coordinate axes, then sin^(2)alpha+sin^(2)beta+sin^(2)gamma=

If alpha, beta, gamma are the angles which a line makes with positive direction of the axes, then match the quantities in column-I to their values in column-II:

If alpha, beta , gamma are the angles that a line makes with the positive direction of x, y, z axis, respectively, then the direction-cosines of the line are :

If alpha,beta,gamma be the angles which a line makes with the coordinates axes, then