# Math unit circle

The unit circle has a radius of 1. So the hypotenuse has length 1. Now, what is the length of this blue side right over here? You could view this as the opposite side to the angle. Well, this height is the exact

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## Unit Circle

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## Unit Circle

A unit circle is just a circle that has a radius with a length of 1. But often, it comes with some other bells and whistles. A unit circle can be used to define right triangle

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## How to Remember the Unit Circle (NancyPi)

Practice your understanding of the unit circle definition of sine and cosine. If you're seeing this message, it means we're having trouble loading external resources on our website. Math

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## How to Use the Unit Circle in Trig

Because the number 1 is called the unit in mathematics, a circle with a radius of length 1 is called the unit circle. Once the hypotenuse has a fixed length of r = 1, then the values of the trig ratios will depend only on x and y, since multiplying

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