Find 
. Express the answer in standard form.z1 = 15(cos 240° + i sin 240°)z2 = 5(cos 60° + i sin 60°)
A. -3 - 3i
B. - 
- 
i
C. -3i
D. -3
Answer: D
Mathematics
You might also like to view...
Determine whether the following is always true or not always true. Given reasons for your answers.c(u ? v) = cu ? cv (any number c)
What will be an ideal response?
Mathematics
Write as a percent. 0.34
A. 3.4% B. 34% C. 0.034% D. 340%
Mathematics
Refer to the double-bar graph below which shows the number of male and female athletes at a university over a four-year period. Solve the problem.
Find the increase in the number of female athletes from 2003 to 2004.
A. 125 B. 150 C. 175 D. 375
Mathematics
Use an equation to solve the percent problem.What number is 20% of 43?
A. 8.6 B. 860 C. 86 D. 0.86
Mathematics