Suppose an arc of length s lies on the unit circle x2 + y2 = 1, starting at point (1, 0) and terminating at the point (x, y). Use a calculator to find the approximate coordinates (x, y). Round coordinates to four decimal places when appropriate. 
s = 5.6
A. (-0.7756, 0.6313)
B. (-0.7756, -0.6313)
C. (0.7756, -0.6313)
D. (-0.6313, 0.7756)
Answer: C
Mathematics
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