SOLUTION: Express the complex number, 3+4i, in polar form. (Round decimals to the nearest tenth) One of the following is the correct answer. Which one? A) 5(cos0.93+isin0.93) B) 25(s

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Express the complex number, 3+4i, in polar form. (Round decimals to the nearest tenth) One of the following is the correct answer. Which one? A) 5(cos0.93+isin0.93) B) 25(s      Log On


   

Question 1198547: Express the complex number, 3+4i, in polar form. (Round decimals to the nearest tenth)
One of the following is the correct answer. Which one?
A) 5(cos0.93+isin0.93)
B) 25(sin0.93+icos0.93)
C) 5(sin0.93+icos0.93)
D) 25(cos0.93+sin0.93)
E) -5(cos0.93+isin0.93)
Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
.

The modulus is  r = sqrt%283%5E2+%2B+4%5E2%29 = sqrt%2825%29 = 5 (the positive value of the square root).


The argument is  arctan%284%2F3%29 = use your calculator = 0.93.


Hence, the correct answer is (A).

Solved.