### Home > PC3 > Chapter 11 > Lesson 11.2.1 > Problem11-89

11-89.

During class, Caleb converted the rectangular coordinates $(−8, −3)$ to polar form and wrote $(\sqrt { 73 },0.359)$, as his answer. Without checking Caleb’s calculations, Leonia said, “Wait, those are not the correct polar coordinates.” How did Leonia know that Caleb’s answer was wrong? How can Caleb correct his polar coordinates?

The point $(−8, −3)$ is in Q3.
Where is $0.359$ radians?