Express the given trigonometric function in terms of the indicated function.csc ?, in terms of cot ?
A. csc ? = 
B. csc ? = ±
C. csc ? = 
D. csc ? = 
Answer: B
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Find the average value of the function f over the given region.f(x, y) = 
over the region bounded by 
, 
, 
, and 
.
A. 
ln 2
B. 60 ln 2
C. 
ln 2
D. ln 2
Graph the pair of parametric equations with the aid of a graphing calculator.x = 6 cos t + 2 cos 3t, y = 6 sin t - 2 sin3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Find the average value of the function f over the given region.f(x, y) = sin 3(x + y); R = 
A. 
B. 
C. 4?2
D. ?2
Solve the problem.The price P of a certain computer system decreases immediately after its introduction and then increases. If the price P is estimated by the formula P = 120t2 - 1500t + 6100, where t is the time in months from its introduction, find the time until the minimum price is reached.
A. 25 months B. 12.5 months C. 6.3 months D. 7.5 months