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-by-Step Solution:

1. **Identify the Angles**:
- The angles made with the axes are:
- \( \alpha = 90^\circ \) (with the x-axis)
- \( \beta = 60^\circ \) (with the y-axis)
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