Question

Three planets are in circular orbits around a star. Their polar coordinate positions relative to the star are: Location of planet 1 (74.45°) Location of planet 2 (85.74°) Location of planet 3 (93.53°) If the position of the star is (120;45°), which planet is farthest from the star?

81

likes
407 views

Answer to a math question Three planets are in circular orbits around a star. Their polar coordinate positions relative to the star are: Location of planet 1 (74.45°) Location of planet 2 (85.74°) Location of planet 3 (93.53°) If the position of the star is (120;45°), which planet is farthest from the star?

Expert avatar
Sigrid
4.5
120 Answers
1. Convert the polar coordinates of the star to Cartesian coordinates:
(r, \theta) = (120, 45°) \implies (x, y) = (120 \cos 45°, 120 \sin 45°)
x = 120 \cdot \frac{\sqrt{2}}{2} = 60\sqrt{2}
y = 120 \cdot \frac{\sqrt{2}}{2} = 60\sqrt{2}

2. Compare distances from the star to each planet in polar coordinates, remembering that in polar coordinates with the same radius, the further the angle is from the reference angle, the farther it goes:
- Since planet 1 (74.45°) and planet 2 (85.74°), planet 3 (93.53°) all share the same radius defaulting to the polar coordinates, in this simplest problem given note comparing the relative distances each time the largest angle implies the largest relative distance:

Since
93.53° > 85.74° > 74.45°
Answer:
Planet \; 3 (93.53°)

Frequently asked questions (FAQs)
What is 2/3 divided by 1/4?
+
What is the standard deviation of a set of numbers: 4, 6, 8, 10, 12?
+
What is the coordinate of the point on the unit circle chart, in radian measure, corresponding to an angle of π/3 radians?
+
New questions in Mathematics
A pump with average discharge of 30L/second irrigate 100m wide and 100m length field area crop for 12 hours. What is an average depth of irrigation in mm unIt?
Solution to the equation y'' - y' - 6y = 0
A car tire can rotate at a frequency of 3000 revolutions per minute. Given that a typical tire radius is 0.5 m, what is the centripetal acceleration of the tire?
Solve: −3(−2x+23)+12=6(−4x+9)+9.
The ratio of tomatoes to red apples is 2:5. If there are 20 tomaoes in the garden, how many red apples are there?
Supposed 60% of the register voters in a country or democrat. If a sample of 793 voters is selected, what is the probability that the sample proportion of Democrats will be greater than 64% round your answer to four decimal places
In a store, a person carries 14 kilos of rice and 28 kilos of flour. In what ratio are the kilos found? (Remember to simplify until you reach an irreducible fraction)
Log(45)
Clara usually walks briskly to the farmers' market and it takes her 22 minutes. Today she walked leisurely and it took 61/2 minutes. How much more time than usual did she take to reach the market today?
prove that if n odd integer then n^2+5 is even
Prove that it is not possible to arrange the integers 1 to 240 in a table with 15 rows and 16 columns in such a way that the sum of the numbers in each of the columns is the same.
I want you to solve this problem as a grade sixth pupil in primary school: 8 Pigs ate 6 bags of fee in 20 days. How long will it take 10 pigs to eat 15 bags of feed eating at the same rate?
Is -11/8 greater than or less than -1.37?
The two sides of the triangle are 12 cm and 5 cm, and the angle between the sides is 60°. Cover the area of ​​the triangle!
Find the equation of a straight line that has slope 3 and passes through the point of (1, 7) . Write the equation of the line in general forms
What is the percentage of nitrogen abundance in copper dinatrate Cu(NO3)2
The slope of the tangent line to the curve f(x)=4tan x at the point (π/4,4)
Find the orthogonal projection of a point A = (1, 2, -1) onto a line passing through the points Pi = (0, 1, 1) and P2 = (1, 2, 3).
Let f(x)=-1/2x+5 evaluate f(-6)
13/25+7/16