![\bf \stackrel{a}{2}\qquad \stackrel{b}{-2}i~~ \begin{cases} r=&\sqrt{a^2+b^2}\\ &\sqrt{2^2+(-2)^2}\\ &\sqrt{2^2(1+1)}\\ &2\sqrt{2}\\ \theta =&tan^{-1}\left( \frac{b}{a} \right)\\ &tan^{-1}\left( \frac{-2}{2} \right)\\ &tan^{-1}(-1)\\ &\frac{3\pi }{4}~~,~~\frac{7\pi }{4}\\ &\frac{7\pi }{4} \end{cases}~\hfill \implies ~\hfill \begin{array}{llll} r[\cos(\theta )+i\sin(\theta )]\\\\ 2\sqrt{2}\left[ \cos\left( \frac{7\pi }{4} \right)+i\sin\left( \frac{7\pi }{4} \right) \right] \end{array}](/tpl/images/0350/3807/ddeb5.png)
Express the complex number in trigonometric form. 2 - 2i
...
Mathematics, 29.10.2019 02:31 sayedabdullah
Express the complex number in trigonometric form. 2 - 2i
Answers: 1
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 19:00, emilyblaxton
Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?
Answers: 1
Mathematics, 21.06.2019 19:20, alexcarrasco5903
1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?
Answers: 3
Mathematics, 21.06.2019 22:40, kevon9008
Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236
Answers: 1
You know the right answer?
Questions in other subjects:
Mathematics, 30.11.2021 14:00
Mathematics, 30.11.2021 14:00
Mathematics, 30.11.2021 14:00
Mathematics, 30.11.2021 14:00
Computers and Technology, 30.11.2021 14:00
Biology, 30.11.2021 14:00
