mark the points A(5,5) and B(7,2) draw a circle that has point a as the center and passes through point B measure and label the
length of a radius of a circle
2 answers:
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if you don't have a Unit Circle yet, this is a good time to get one, you can find many online, check maybe in yahoo images, or google images.
Check the picture below.
notice the section encircled in purple.
