Show that the area of the triangle contained between the vector `overset rarr(a ) and overset rarr(b)` is one half of the magnitude of `overset rarr(a) xx overset rarr(b)`

Explanation

To show that the area of the triangle formed by vectors **a** and **b** is one half of the magnitude of **a** × **b**, we can follow these steps:

### Step 1: Understand the Cross Product
The cross product of two vectors **a** and **b** is defined as:
\[ \mathbf{a} \times \mathbf{b} = |\mathbf{a}| |\mathbf{b}| \sin \theta \, \mathbf{n} \]
where:
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