Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.-
- i
A. 
(cos 315° + i sin 315°)
B. 
(cos 135° + i sin 135°)
C. 
(cos 45° + i sin 45°)
D. 
(cos 225° + i sin 225°)
Answer: D
Mathematics
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A. 
B. 
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Use formulas to find the area of the plane region.
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