Question

convert the point (5root2,-5root2) from rectangular to polar coordinates.

Answer 1

Reference Angle?
Quadrant?
Magnitude?

Answer 2

no it isn't
you need \(r\) and\(\theta\) and
\[r=\sqrt{(5\sqrt{2})^2+(5\sqrt{2})^2}=\sqrt{25\times 2+25\times 2}=\sqrt{100}=10\]

Answer 3

for \(\theta\) think about where you are
over and down the same number of units