Find all cube roots of the complex number. Leave answers in trigonometric form.125(cos 255° + i sin 255°)
A. 5 cis 175°, 5 cis 235°, 5 cis 115°
B. 5 cis 85°, 5 cis 145°, 5 cis 25°
C. 5 cis 85°, 5 cis 205°, 5 cis 205°
D. 5 cis 85°, 5 cis 205°, 5 cis 325°
Answer: D
Mathematics
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Solve the problem.How many 3-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0? No digit can be used more than once.
A. 720 B. 120 C. 604,800 D. 1,209,600
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Determine the symmetries of the curve.r = 9 cos 5?
A. x-axis, y-axis, origin B. x-axis only C. Origin only D. y-axis only
Mathematics
Express the vector as a product of its length and direction.
i - 
j + 
k
A. 
B. 
C. 
D. 
Mathematics
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
Mathematics