What is the Cartesian form of $(45,(-15pi)/8)$ ?

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Answer 1 · 2016-06-10T22:02:18

It is $(41.57, 17.22)$ .

Your point is given in coordinates $(r, theta)$ .

The conversion is

$x=rcos(theta)$

$y=rsin(theta)$

substituting the numbers

$x=45*cos(-(15pi)/8)\approx41.57$

$y=45*sin(-(15pi)/8)\approx17.22$ .

What is the Cartesian form of (45,(-15pi)/8)(45,(-15pi)/8)?