Simplify.- 
A. does not exist as a real number
B. -180
C. -19
D. 19
Answer: C
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Solve the problem.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the x-axis and the curve y = x cos x, 0 ? x ? ?/2 about the y-axis.
A. 
+ 2?2 - 4?
B. 
- 8?
C. 
- 4?
D. 
- 4?
Write the percent as a decimal.58%
A. 5.8 B. 0.058 C. 58.0 D. 0.58
Find the unknown.
A. x = 5 ft, y = 5 ft, m = 35°, n = 145° B. x = 10 ft, y = 5 ft, m = 145°, n = 35° C. x = 5 ft, y = 10 ft, m = 35°, n = 145° D. x = 10 ft, y = 5 ft, m = 35°, n = 145°
Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex fifth roots of 
+ i
A. 
(cos 30° + i sin 30°), 
(cos 102° + i sin 102°), 
(cos 174° + i sin 174°), 
(cos 246° + i sin 246°), 
B. 
(cos 6° + i sin 6°), 
(cos 78° + i sin 78°), 
(cos 150° + i sin 150°), 
(cos 222° + i sin 222°), 
C. 32(cos 30° + i sin 30°), 32(cos 102° + i sin 102°), 32(cos 174° + i sin 174°), 32(cos 246° + i sin 246°), 
D. 32(cos 6° + i sin 6°), 32(cos 78° + i sin 78°), 32(cos 150° + i sin 150°), 32(cos 222° + i sin 222°), 