Question

1. 0.72/1 points 1/12 submissions used (a) the unit circle is the circle centered at ( ) with radius.

Explanation:

Step1: Recall the definition of unit circle

The unit circle is a fundamental concept in mathematics. By definition, the unit circle is centered at the origin \((0,0)\) in the coordinate plane.

Step2: Recall the radius of unit circle

Also, by definition, the radius \(r\) of the unit circle is \(1\).

Answer:

The unit circle is centered at \((0,0)\) with radius \(1\).