How do you convert $z= 55$ to polar form?

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Answer 1 · 2016-09-11T12:39:55

$z = 55 (cos(0) + isin(0))$

The polar form of $z$ looks like

$z = r(costheta + isintheta)$

where $r$ and $theta$ are real numbers to be found

From Pythagorean's Theorem,
$r = sqrt{55^2 + 0^2} = 55$

From trigonometry,
$theta = tan^{-1}(0/55) = 0$

How do you convert z= 55z= 55 to polar form?