Answer:
60°
Explanation:
The scalar product of two vectors with an angle ∅ between them is defined as:
[tex]\overrightarrow{a}\cdot \overrightarrow{b}=|a||b|cos\phi[/tex]
Solving for angle ∅:
[tex]\phi= cos^{-1}(\frac{\overrightarrow{a}\cdot \overrightarrow{b}}{|a||b|})=cos^{-1}(\frac{4}{8})[/tex]
