Write the complex number in polar form.3j
A. 3(cos 180° + j sin 180°)
B. 3(cos 90° + j sin 90°)
C. 3(cos 270° + j sin 270°)
D. 3(cos 0° + j sin 0°)
Answer: B
Mathematics
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A. 6 B. 9 C. 3 D. 12
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A. 
B. 
C. 
D. 
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True or false?The intersection of the sets (-?, -22) and (-22, ?) is {-22}.
A. True B. False
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Choose the graph of the equation.z2- y2- x2= 1
A. 
B. 
C. 
D. 
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