Question

If α, β and γ are the angles which a line makes with positive directions of x, y and z axes respectively, then which of the following is not true?

If a line makes an angle of π/4 with the positive directions of both x-axis and z-axis, then the angle which it makes with the positive direction of y-axis is :

The angle which the line x/1 = y/−1 = z/0 makes with the positive direction of Y-axis is :

Find the vector equation of the line passing through the point (2, 3, −5) and making equal angles with the co-ordinate axes.