Defining Sine, Cosine, and Tangent

In Conclusion

Compared to most other books, this book doesn't rely very much on vector math. This appendix contains only the most cursory information. For this book, you can get by with the four main points listed next .

• Vectors represent positions , orientations, and directions in multidimensional space.

• The magnitudes of vectors can be computed using the Pythagorean theorem.

• Vectors can be normalized into unit vectors describing their direction.

• The vector cross product is a normal vector that is perpendicular to both vectors.