For each of two vectors, enter: Magnitude and either [color=#0a971e]Heading[/color] (course, or bearing) as a COMPASS angle measured [color=#0a971e]CLOCKWISE from NORTH[/color] or [color=#1551b5]Direction angle[/color] (TRIG angle) measured [color=#1551b5]COUNTERCLOCKWISE from the positive X-AXIS[/color]. The [color=#c51414]Quadrant bearing[/color] will be automatically updated. Check boxes allow you to check the angles of each vector. Zoom in/out using your normal browser methods.