What is the Cartesian form of $(25,(-7pi )/4)$ ?

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Answer 1 · 2017-03-27T22:07:02

$(17.677,17.677)$

To change from polar form to Cartesian form, use $x=rcos theta$ and $y=rsin theta$

$x=25cos ((-7pi)/4) = 17.677$

$y = 25sin ((-7pi)/4) = 17.677$

So in Cartesian form:

$(17.677,17.677)$

What is the Cartesian form of (25,(-7pi )/4)(25,(-7pi )/4)?