If a line makes angle `90o` , `60o` and `30o` with the positive direction of x, y and z-axis respectively, find its direction cosines.

Explanation

To find the direction cosines of a line that makes angles of \(90^\circ\), \(60^\circ\), and \(30^\circ\) with the positive directions of the x, y, and z axes respectively, we can follow these steps:

### Step 1: Identify the angles
Let:
- \(\alpha = 90^\circ\) (angle with the x-axis)
- \(\beta = 60^\circ\) (angle with the y-axis)
- \(\gamma = 30^\circ\) (angle with the z-axis)

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