Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form.(3(cos 120° + i sin 120°))4
A. 70.15 - 40.5i
B. 2.60 - 1.5i
C. -1.5 + 2.60i
D. -40.5 + 70.15i
Answer: D
Mathematics
You might also like to view...
Graph the inverse of the function plotted, on the same set of axes. Use a dashed curve for the inverse.
A. 
B. 
C. 
D. 
Mathematics
Is the set of ordered pairs a function?
?
?
A. function B. not a function
Mathematics
Solve the problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 15 ft. Find the length of the ladder if the length is 5 ft more than its distance from the wall.
A. 30 ft B. 15 ft C. 20 ft D. 25 ft
Mathematics
Find the mode or modes (if any).5, 9, 27, 3, 2, 8, 93, 1, 4, 16
A. 9 B. 16.2 C. 8 D. no mode
Mathematics