Given a = 6, b = 9 and c =12 use the Law of Cosines to solve the triangle for the value of C. Round answer to two decimal places.
A) 60.33°
B) 28.96°
C) 80.44°
D) 46.57°
E) 104.46°
E) 104.46°
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For what values of x does the series converge absolutely?
A. 1 < x < 3 B. 1 < x ? 3 C. 1 ? x ? 3 D. 1 ? x < 3
Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 8i + 6j , v = i - j
A. 14; -14k B. 2; -2k C. 14; -k D. 2; 2k
Find the length of the unknown side in the right triangle. Round to two decimal places, if necessary.
A. c = 86.58 B. c = 29.24 C. c = 10.64 D. c = 27.47
Solve the problem.The function f models the population of Country X from 1991 to 1998. The graphs of f and the horizontal line y = 805 are shown in the figure. Use the graphs to determine the x-values that satisfy (i) the inequality 
and (ii) 
Express your answers symbolically. 
A. {x|x = 1994}; {x|x ? 1994} B. {x|x = 1994}; {x|x > 1994} C. {x|x ? 1994}; {x|x > 1994} D. {x|x > 1994}; {x|x ? 1994}