Answer:
60°
Step-by-step explanation:
wx=√(9²+(3√3)²)=√(81+27)=√108=√(36×3)=6√3
[tex]cos w=\frac{3\sqrt{3}}{6\sqrt{3}} =\frac{1}{2} =cos ~60\\m \angle ~w=60^\circ[/tex]
