Answer
$$ e_v= \left\langle\frac{3}{5},\frac{4}{5}\right\rangle.$$
Work Step by Step
$$ e_v=\frac{v}{\|v\|}=\frac{\langle3,4\rangle}{\sqrt{9+16}}=\left\langle\frac{3}{5},\frac{4}{5}\right\rangle.$$
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