A bird moves with velocity `20m s^(-1)` in a direction making an angle of `60^(@)` with the eastern line and `60^(@)` with vertical upward .Represent the velocity vector in a rectangular form.

Explanation

To represent the velocity vector of the bird in rectangular form, we will follow these steps:

### Step 1: Understand the given information
The bird moves with a velocity of \(20 \, \text{m/s}\) at an angle of \(60^\circ\) with the eastern line (x-axis) and \(60^\circ\) with the vertical upward (y-axis). We need to find the components of this velocity vector in a three-dimensional coordinate system.

### Step 2: Define the angles
Let:
- \(\alpha\) be the angle with the x-axis (eastern line), which is \(60^\circ\).
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