Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).-
- i
A. 
(cos 135° + i sin 135°)
B. 
(cos 45° + i sin 45°)
C. 
(cos 225° + i sin 225°)
D. 
(cos 315° + i sin 315°)
Answer: C
Mathematics
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A. Convex B. Concave
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- 
+ 
A. 
B. 
C. 
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A. 
B. 
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