This applets allows students and teachers to investigate the components of a vector. Two sliders input the magnitude of the vector, and its direction measured in degrees counter-clockwise from the positive x-axis. A check box toggles the visibility of the rectangle whose diagonal is the vector in question. Two toggle buttons are provided: One toggles the angle shown [list] [*]Between vector and positive x-axis [*]Between vector and positive y-axis [*]Between vector and x-component vector [*]Between vector and y-component vector [*]No angle [/list] The other button toggles through different pairs of component-vectors. At the lower left, the scalar-components of the vector are shown along with their calculation.