Write the complex number in trigonometric form, using degree measure for the argument.4
- 4i
A. 8(cos 30° + i sin 30°)
B. 8(cos 150° + i sin 150°)
C. 8(cos(-30°) + i sin(-30°))
D. 8(cos(-60°) + i sin(-60°))
Answer: C
Mathematics
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A. Hamilton's method B. Jefferson's method C. Hill-Huntington method D. Webster's method
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Find the unit vector in the same direction as the given vector.v = -12i - 5j
A. u = - 
i - 
j
B. u = 
i + 
j
C. u = -156i - 65j
D. u = - 
i - 
j
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Write the rate as a fraction in simplest form.A biker goes 90 yards in 45 seconds.
A. 
B. 
C. 
D. 
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Determine whether the relation is a function.{(1, -8), (1, -7), (6, 7), (8, -8), (12, 7)}
A. Not a function B. Function
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