Which of the following expressions is equivalent to 
? (a ? ?n, where n is a whole number)
?
A. sin t (2 - 2 csc2t)
B. cos t (2 csc2t - 2)
C. cos t (2 - 2 csc2t)
D. sin t (2 csc2t - 2)
E. tan t (2 csc2t - 2)
Answer: B
Mathematics
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