What are the components of the vector between the origin and the polar coordinate $(-4, (4pi)/3)$ ?

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Answer 1 · 2016-03-21T15:57:20

$-4cos(4pi/3)hati-4sin(4pi/3)hati=-4*(-sqrt3/2)hati-4(-1/2)hatj$
$=4sqrt3hati+2hatj$

What are the components of the vector between the origin and the polar coordinate (-4, (4pi)/3)(-4, (4pi)/3)?