Since this is a right triangle, we can use trigonometry. We will use one of the three main trigonometric functions: sine, cosine, or tangent.
Remember: SOH-CAH-TOA
Looking at angle V, we know the opposite side and the adjacent side. Therefore, we should use the tangent function.
tan(V) = 3/6
To solve, use the inverse tangent function (tan^-1) on your calculator.
V = 26.6 degrees
Hope this helps!