Vector $\vec{r_1}$ $x_1 =$ $y_1 =$ $r_1 =$ $\theta_1 =$ ° Vector $\vec{r_2}$ $x_2 =$ $y_2 =$ $r_2 =$ $\theta_2 =$ ° Vector Sum, $\vec{r_1}+\vec{r_2}$ $x =$ $y =$ $r =$ $\theta =$ °
The above grid represents a two-timensional $xy$-space where we can place two vectors, and perform their vector addition. As you click-and/or-drag to place the first vector, its components, magnitude and direction are displayed (the direction is given in degrees, positive for vectors in the first and second quadrant and negative for vectors in the third and fourth quadrant). As you release, the vector is created (in blue), and you can now click-and/or-drag to place the second vector (in red). Both vectors must be placed inside the central part, the [-10,10] range along both axes, otherwise their sum may end up being too big to fit inside the [-20,20] range of the grid. A "Clear" button allows you to remove the last vector you added; an "All Clear" allows you to start all over again.