The ebook Elementary Calculus is based on material originally written by H.J. Keisler. For more information please read the copyright pages.


Example 8

Find the vector A which has length 6 and direction cosines (-1/2, √3/2).

A = 6(-1/2)i + 6(√3/2)j = -3i + 3√3j.


Last Update: 2006-11-15