What is a Vector?
A vector is a quantity that has both magnitude (size) and direction. Examples include displacement, velocity, force, and acceleration. Vectors are represented as arrows — the length shows magnitude, the arrowhead shows direction.
Triangle Law
Place two vectors head-to-tail. The resultant vector R joins the tail of the first vector (A) to the head of the last vector (B). Mathematically: R = A + B.
How to Use
• Drag the arrowheads on the canvas to adjust vectors visually
• Use sliders below the canvas for precise values
• Switch between Triangle, Parallelogram, and Polygon tabs
• In Polygon mode, add or remove vectors with the buttons
• Watch the resultant update in real-time
Key Points
• The Triangle Law and Parallelogram Law give the same resultant for the same two vectors — they are just different visual methods
• The Polygon Law generalizes vector addition to any number of vectors
• Vector addition is commutative: A + B = B + A
• Vector addition is associative: (A + B) + C = A + (B + C)