The formula below gives the relationship between the number of sides n, the radius r, and the length of each side l in a regular polygon. Find n, if ?l? = 1?r?.
?
?
?
A. n = 8
B. n = 5
C. n = 7
D. n = 6
E. n = 4
Answer: D
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Find sin t.
A. 
B. 
C. 
D. 
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