Mathematics, 16.03.2020 23:39 bentleyevans15
If we start at the point (1,0) and travel once around the unit circle, we travel a distance of 2 pi units and arrive back where we started at the point (1,0). If we continue around the unit circle a second time, we will repeat all the values of x and y that occurred during our first trip around. Use the this discussion to evaluate the following expressions
sin (2pi + 3pi/2)
Answers: 2
, 
is a complete revolution and is the same as 0. So we have
is a half revolution, putting the point at (-1, 0). 
is a quarter of a revolution. A quarter circle from (-1, 0) anticlockwise is (0, -1).
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If we start at the point (1,0) and travel once around the unit circle, we travel a distance of 2 pi...
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