What are the components of the vector between the origin and the polar coordinate $(7, (3pi)/2)$ ?

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Answer 1 · 2017-04-03T16:50:48

$vecv = (rcos(theta))hati+ (rsin(theta))hatj$

$vecv = (7cos((3pi)/2)))hati+ (7sin((3pi)/2))hatj$

$vecv = (0)hati+ (-7)hatj$

$vecv = -7hatj$

What are the components of the vector between the origin and the polar coordinate (7, (3pi)/2)(7, (3pi)/2)?