Find `veca.vecb if |veca|=2, |vecb|=5,and |vecaxxvecb|=8`

Explanation

To find the dot product \( \vec{a} \cdot \vec{b} \) given the magnitudes of the vectors and the magnitude of their cross product, we can follow these steps:

### Step 1: Write down the given information
We have:
- \( |\vec{a}| = 2 \)
- \( |\vec{b}| = 5 \)
- \( |\vec{a} \times \vec{b}| = 8 \)

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