**Vectors - Math is Fun**
https://www.mathsisfun.com/algebra/vectors.html

SubtractingCalculationsAdding VectorsMagnitude of A VectorVector vs ScalarMultiplying A Vector by A ScalarMore Than 2 DimensionsMagnitude and DirectionAn Example The magnitude of a vector is shown by two vertical bars on either side of the vector: |a| OR it can be written with double vertical bars (so as not to confuse it with absolute value): ||a|| We use Pythagoras' theoremto calculate it: |a| = √( x2 + y2) A vector with magnitude 1 is called a Unit Vector.

The magnitude of a vector is shown by two vertical bars on either side of the vector: |a| OR it can be written with double vertical bars (so as not to confuse it with absolute value): ||a|| We use Pythagoras' theoremto calculate it: |a|** = √( x2 + y2) A vector with magnitude 1 is called a Unit Vector.**

**DA:** 44 **PA:** 39 **MOZ Rank:** 13