In polar coordinates, an equation of the form r = a (where 'a' is a constant) describes what geometric shape?
Show answer
A circle
Since 'r' represents the distance from the origin (pole), the set of all points at a fixed distance 'a' from the origin forms a circle with radius 'a' centered at the origin.
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- What shape is represented by the polar equation r = a, where a is a constant?