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What is the distance between $(0, \frac{- 13 π}{8})$ $(0 , (-13 pi)/8 )$ and $(9, π)$ $(9, pi )$ ?

1 Answer

Oct 11, 2016

$9$ $color(green)(9)$

Explanation:

(Assuming the given coordinates are in Polar form)

$(0, \frac{- 13 π}{8})$ $(0,(-13pi)/8)$ is a point at the origin (the angle of rotation is irrelevant if the radius is $0$ $0$ ).

$(9, π)$ $(9,pi)$ is a point at a distance of $9$ $9$ from the origin.

The distance between the origin [at $(0, \frac{- 13 π}{8})$ $(0,(-13pi)/8)$ ]
and a point $9$ $9$ units from the origin [at $(9, π)$ $(9,pi)$ ]

$XXX$ $color(white)("XXX")$ is $9$ $9$

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