Mathematics, 30.01.2020 14:58 anggar20
Which polar coordinates represent the same point as the rectangular coordinate (2,-1?
Answers: 3
![\bf (\stackrel{a}{2}~,~\stackrel{b}{-1})\qquad \begin{cases} r=\sqrt{a^2+b^2}\\\\ \theta =tan^{-1}\left( \frac{b}{a} \right) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ r=\sqrt{2^2+(-1)^2}\implies r=\sqrt{5} \\\\\\ \theta =tan^{-1}\left( \cfrac{-1}{2} \right)\implies \theta \approx -26.57^o\implies \theta \approx 333.43^o \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (\sqrt{5}~~,~~333.43^o)~\hfill](/tpl/images/0486/2447/317b9.png)
Another question on Mathematics
Mathematics, 21.06.2019 18:20
The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?
Answers: 1
Mathematics, 21.06.2019 19:00
Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.
Answers: 2
Mathematics, 21.06.2019 19:30
Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2
Answers: 1
Mathematics, 21.06.2019 19:40
Ascatter plot with a trend line is shown below. which equation best represents the given data? y = x + 2 y = x + 5 y = 2x + 5
Answers: 1
You know the right answer?
Which polar coordinates represent the same point as the rectangular coordinate (2,-1?...
Questions
Chemistry, 09.09.2021 06:30
History, 09.09.2021 06:30
Social Studies, 09.09.2021 06:30
Mathematics, 09.09.2021 06:40
Business, 09.09.2021 06:40
Health, 09.09.2021 06:40
Biology, 09.09.2021 06:40
English, 09.09.2021 06:40
Mathematics, 09.09.2021 06:40
English, 09.09.2021 06:40
Mathematics, 09.09.2021 06:40
Mathematics, 09.09.2021 06:40
Chemistry, 09.09.2021 06:40
