Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.cos 
A.
B. -
C.
D. -
Answer: D
Mathematics
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Simplify. Express in terms of i.
A. -2
B. -2i
C. 2
D. 2i
Mathematics
P(N = 5); N is Poisson (4.7).
Find the probability for the given random variable.
Mathematics
Find the LCM of the expressions.6a, 12a2
A. 6a2 B. 36a3 C. 6a3 D. 12a2
Mathematics
Find the equation of the transverse axis of the hyperbola. 9(x - 5)2 - 16(y + 1)2 = 144
A. x = 9 B. y = -1 C. y = 1 D. x = -1
Mathematics