# Is a circle a polar graph?

Space and Astronomy## Is a circle a polar curve?

**A circle centered at the pole has a very simple equation in polar form**. r = a , r=a, r=a, where a a a is the radius of the circle.

## How do you know if a graph is polar?

Solution: Identify the type of polar equation The polar equation is in the form of a limaçon, r = a – b cos θ. Since the equation passes the test for symmetry to the polar axis, we only need to **evaluate the equation over the interval [0, π] and then reflect the graph about the polar axis**.

## How do you graph a circle on a polar graph?

Video quote: *And if you look on the polar graph R goes from 1 all the way to 0. And theta increases. In a counterclockwise direction. So we get the top half of the circle.*

## How do you find the polar equation of a circle?

Video quote: *And since R squared is equal to x squared plus y squared. We can replace or substitute R squared for x squared plus y squared. So this would give us the equation R squared is equal to 36.*

## What is the polar form of a circle?

What is the Polar Equation of a Circle? The polar equation of the circle with the center as the origin is, **r = p**, where p is the radius of the circle.

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