Find the exact value of the expression without using a calculator or table.arccos 
A. 
B. - 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.If x = 3 tan ?, express sin(2?) as a function of x.
What will be an ideal response?
Mathematics
Find the indicated intercept(s) of the graph of the function.x-intercepts of f(x) = 
A. (-2, 0)
B. (4, 0)
C. (
, 0), (-
, 0)
D. none
Mathematics
Express the sum using summation notation. +
+
... +
A.
B.
C.
D.
Mathematics
Solve the problem.The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 
length with diameter 2 inches costs $48.00 , how much will a 
length with diameter 
cost?
A. $221.57 B. $213.60 C. $216.00 D. $221.30
Mathematics