Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).9 + 9i
A. 9
(cos 135° + i sin 135°)
B. 9
(cos 45° + i sin 45°)
C. 9
(cos 225° + i sin 225°)
D. 9
(cos 315° + i sin 315°)
Answer: B
Mathematics
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The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose last?
A. BC B. AB C. AC D. CD E. none of these
Mathematics
Simplify the expression.
? 
A. 
B. 
C. 
D. 
Mathematics
Find the unknown length in the right triangle. If necessary, round to the nearest tenth.
A. 11 yd B. 15 yd C. 12 yd D. 14 yd
Mathematics
Translate to an equation and solve. 304 is what percentage of 38?
A. 8%
B. 
%
C. 800%
D. 80%
Mathematics