how to find the angle between two vectors
Dot Product. The dot product, or scalar product, of two vectors is equal to the sum of the products of the corresponding coordinates in each vector. If a = (x,y,z) and b = (u,v,w), then the dot product is aÂ·b = x u + y v + z*w. vector is a quantity with magnitude and direction. For example a wind speed vector says how fast the wind is blowing, as well as in what direction. The easiest way to calculate the angle between two different vectors is by using the dot product.