Find the angle between the vectors u and v. Express your answer in degrees and round to the nearest tenth of a degree.
u = 
, v = 
A. 38°
B. 90°
C. 38.2°
D. 51.8°
E. 52°
Answer: A
Mathematics
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Solve the problem.An airplane is flying in the direction 35° east of south at 863 km/hr. Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents due north.
A. 
B. 
C. 
D. 
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Find the focus and directrix of the parabola.x2 = 28y
A. (0, -7); x = - 7 B. (7, 0); x = 7 C. (7, 0); y = 7 D. (0, 7); y = -7
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Evaluate the definite integral.
A. -10
B. 10
C. 20
D. 10(e3 - e)
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Evaluate the arithmetic expression by performing the operations in the appropriate order.112 ? 152 - (13 - 1)
A. 27,211 B. 27,213 C. 326,700 D. 648
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