Mathematics, 10.07.2019 08:30 astigall6360
Convert the complex number from rectangular form to polar form. z = -14 + 8i
Answers: 1
![\bf \stackrel{a}{-14}+\stackrel{b}{8}i\quad \begin{cases} r[cos(\theta )+i~sin(\theta )]\\ ----------\\ r=\sqrt{a^2+b^2}\\ \theta =tan^{-1}\left( \frac{b}{a} \right) \end{cases} \\\\\\ r=\sqrt{(-14)^2+8^2}\implies r=\sqrt{260}\implies \boxed{r=2\sqrt{65}} \\\\\\ \theta =tan^{-1}\left( \frac{8}{-14} \right)\implies \theta \approx -29.74^o](/tpl/images/0072/5924/9a67e.png)
![\bf \begin{cases} r=2\sqrt{65}\\ \theta =150.26^o \end{cases}\implies 2\sqrt{65}[cos(150.26^o)+i~sin(150.26^o)]](/tpl/images/0072/5924/c7793.png)
Another question on Mathematics
Mathematics, 21.06.2019 17:00
Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.
Answers: 1
Mathematics, 21.06.2019 19:30
Find the commission on a $590.00 sale if the commission is 15%.
Answers: 2
Mathematics, 21.06.2019 21:00
Askateboard ramp is in the shape of a right triangle what is the height of the ramp
Answers: 3
Mathematics, 21.06.2019 21:30
Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?
Answers: 3
You know the right answer?
Convert the complex number from rectangular form to polar form. z = -14 + 8i...
Questions
Social Studies, 08.10.2019 11:30
Mathematics, 08.10.2019 11:30
Biology, 08.10.2019 11:30
History, 08.10.2019 11:30
Mathematics, 08.10.2019 11:30
Mathematics, 08.10.2019 11:30
Social Studies, 08.10.2019 11:30
English, 08.10.2019 11:30
Mathematics, 08.10.2019 11:30
History, 08.10.2019 11:30
