## Related questions with answers

Question

Sketch the circles. Give polar coordinates for their centers and identify their radii.

$r = 4 \cos \theta$

Solutions

VerifiedSolution A

Solution B

Answered 12 months ago

Step 1

1 of 5The goal of the exercise is to sketch the given circle

$r=4\cos{\theta}$

and then we have to find the center and radius of the circle in polar coordinates.

Answered 12 months ago

Step 1

1 of 2If $a > 0$, $r = a \cos \theta$ is a circle with center $(a/2, 0)$ and radius $a/2$. Since here $a =4$, therefore the center is $(2,0)$ and radius is 2. (See graph on the left.)

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