Vectors given the resultant and angle

[Mallorie]

Homework Statement

The figure depicts the sum of two velocities, vA and vB. The value of the sum is7 m/s and the angles shown in the image are θ1 = 29.8°, and θ2 = 18.3°.

Homework Equations

The Attempt at a Solution

I have no idea where to even begin on this

 

[axmls]

You have two angles of the triangle, right? You can find the third angle. Then you can use some well-known trig formulas to find the remaining side.