3.3 Definition III: Circular Functions. A unit circle has its center at the origin and a radius of 1 unit. Circular Functions. Unit Circle. Domains of the Circular Functions. Assume that n is any integer and s is a real number. Sine and Cosine Functions: ( , )
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3.4 Arc Length and Area of a Sector
b) 144Example: Finding Arc Length
Convert 39.72 to radian measure.Example: Finding a Length