Three forces are applied to an object, as indicated in the drawing. Force `vecF_(1)` has a magnitude of `21.0` newton `(21.0N)` and is directed `30.0^(@)` to the left of the +y axis. Force `vecF_(2)` has a magnitude of `15.0` N and points along the +x axis. What must be the magnitude and direction (spectified by the angle `theta` in the draeing) of the third force `vecF_(3)` such that the vector sum of the three force is 0 N ?

Options

A. `16.9N, 81^(@)`
B. `20.4N, 75^(@)`
C. `22.3 N, 79^(@)`
D. `18.7N, 76^(@)`

Answer

D