Find the polar coordinates corresponding to the point for which the rectangular coordinates are (2,-5), correct to 3 significant digits.
How do I start this problem?
$\displaystyle r = 5.39$
$\displaystyle \theta = -68.2\;degrees\Longrightarrow 360 + -68.2 = 291.8\;degrees$
Should I write my answer has $\displaystyle (5.39,\;291.8\;degrees)$
Or change the $\displaystyle 291.8\;degrees$ to radians?
Which would give $\displaystyle 291.8 \;degrees = 5.09 \;radians$
So the answer would be $\displaystyle (5.39,\; 5.09\; radians)$? Or the first one I listed?