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Home > PC3 > Chapter 11 > Lesson 11.1.2 > Problem 11-31


5 concentric circles, diameters as follows: vertical & horizontal, diagonal cutting each quarter into halves, 4 diagonals, each 15 degrees away from quarter center diameters, with points located as follows; point, A, on top vertical & first circle, point, B, in third quadrant, on middle radius & second circle, point, C, on right  horizontal & third circle, point, D, on left horizontal & second circle.In the figure at the right, there are points marked on the polar grid. What are the polar coordinates of each of those points?

Polar coordinates are of the form (radius, angle).
For example, point has a radius of , so its coordinates are .
Also, point is at an angle of , so its coordinates are .