👉 In mathematics and physics, a vector is a quantity that has both magnitude (or size) and direction. Vectors are fundamental to many areas of science and engineering, including mechanics, electromagnetism, and navigation. A vector can be represented in two dimensions using an arrow or line segment with a tail at the origin (0, 0), which is often denoted by a small dot on top of it. The length of this line segment represents the magnitude of the vector, while its direction