Here’s How to Crack It
Flip B around—thereby forming −B—and add that vector to A.
Components of Vectors
So as you can see, a vector can be defined as the sum of two (or more) vectors.
Perpendicular vectors that are added together to make up a vector are called its
components. The vectors B and C, below, are called the vector components of A.
Two-dimensional vectors, that is, vectors that lie flat in a plane, can be written as
the sum of a horizontal vector and a vertical vector. For example, in the following
diagram, the vector A is equal to the horizontal vector B plus the vertical vector C.