Dacia wants to know how to determine the polar coordinate θ. What should Katarina tell Dacia?

r = √ x² + y² and θ = tan⁻¹ y / x

Explanation:

The polar coordinates are obtained by transforming the Cartesian coordinates (x y) into others (r tés), for this we use to find r the Pythagorean theorem

r = √ x² + y²

To find teas we use trigonometries

tan θ = y / x

θ = tan⁻¹ y / x

In general the angle can be given in any unit, but the most used in physics is in radians