The unit vector, n∧\overset{\wedge}{n}n∧ is given by n∧=r→∣r∣→\overset{\wedge}{n} = \frac{\overset{\rightarrow}{r}}{\overset{\rightarrow}{|r|}}n∧=∣r∣→r→
= −2i + 5j(−2)2+52=−2i + 5j29\frac{-2i\;+\;5j}{\sqrt{(-2)^{2}+5^{2}}} = \frac{-2i\;+\;5j}{\sqrt{29}}(−2)2+52−2i+5j=29−2i+5j
= 129(−2i+5j)\frac{1}{\sqrt{29}}(-2i + 5j)291(−2i+5j)
