Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).-
- i
A. 
( cos 225° + i sin 225°)
B. 
( cos 315° + i sin 315°)
C. 
( cos 45° + i sin 45°)
D. 
( cos 135° + i sin 135°)
Answer: A
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A. The quotient rule does not apply.
B. 
C. 
D. x4
Find the exact value using a double-angle identity.tan(300°)
A. 0
B. 
C. - 
D. - 
Convert from cents to dollars.871¢
A. $8710.00 B. $0.871 C. $87.10 D. $8.71
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A. $3078 B. $5344 C. $3420 D. $835