Question

Choose the correct alternative:
A vector makes equal angle with the positive direction of the coordinate axes. Then each angle is equal to

Options

• `cos^-1 (1/3)`

• `cos^-1 (2/3)`

• `cos^-1 (1/sqrt3)`

• `cos^-1 (2/sqrt3)`

Answer 1

`cos^-1 (1/sqrt3)`