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
119 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)
Math Question: Graph the inequality y < 2x - 3 and shade the region below the line. (
+
Question: What is the area of a triangle with base length 8 units and height of 5 units?
+
What is the value of f(x) = 3x² + 2x - 1 when x = 4?
+
New questions in Mathematics
A normal random variable x has a mean of 50 and a standard deviation of 10. Would it be unusual to see the value x = 0? Explain your answer.
10.Silvana must knit a blanket in 9 days. Knitting 8 hours a day, at the end of the fifth day, only 2/5 of the blanket was done. To be able to finish on time, how many hours will Silvana have to knit per day?
30. In 8 s, a car that starts from rest and moves with uniformly accelerated motion has achieved a speed of 72m/s. How much space must it travel to reach a speed of 90m/s? Sunshine: 450 m
Reparameterize the curve r(t)= cos(t)i without (t)j (t)k by the arc length.
The average number of babies born at a hospital is 6 per hour. What is the probability that three babies are born during a particular 1 hour period?
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?
Suppose that you use 4.29 g of Iron in the chemical reaction: 2Fe(s) + 3 Cu2 + (aq) 2Fe 3 + (aq) + 3Cu(s ) - . What is the theoretical yield of Cu (s), in grams?
If A and B are any events, the property that is not always true is: a) 0 ≤ 𝑃(𝐴 ∩ 𝐵) ≤ 1 b) 𝑃(Ω) = 1 c) 𝑃(𝐵) = 1 − 𝑃(𝐵𝑐) d) 𝑃(∅) = 0 e) 𝑃(𝐴 ∪ 𝐵) = 𝑃(𝐴) + 𝑃(𝐵)
User Before the election, a poll of 60 voters found the proportion who support the Green candidate to be 25%. Calculate the 90% confidence interval for the population parameter. (Give your answers as a PERCENTAGE rounded to TWO DECIMAL PLACES: exclude any trailing zeros and DO NOT INSERT THE % SIGN) Give the lower limit of the 90% confidence interval Give the upper limit of the 90% confidence interval
Two minus log 3X equals log (X over 12)
A hardware bill totals $857.63 with discounts of 5% and 3%. What is the net cost of the Material ?
nI Exercises 65-68, the latitudes of a pair of cities are given. Assume that one city si directly south of the other and that the earth is a perfect sphere of radius 4000 miles. Use the arc length formula in terms of degrees to find the distance between the two cities. 65. The North Pole: latitude 90° north Springfield, Illinois: latitude 40° north
To find the increased amount on a standard term deposit with the following conditions: starting amount: BGN 13000, type of deposit: annual, annual compound interest rate: 1.4%, after 4 years;
The annual real property tax liability for a residential property is $4302 and has been paid by the seller in advance of closing. Using the 30-day month/260-day year method what will be the tax proration entry on the settlement statement round to the nearest dollar for a closing on Oct. 26 if the buyer owns the day of closing? a. $3525 credit to the buyer and $777 debit to the seller b. $777 debit to the buyer and $3525 debit to the seller c. $777 credit to the buyer and $777 debit to the seller d. $3525 debit to the buyer and $3525 credit to the seller *Can anyone help with this? I am studying for my real estate exam and am having trouble with some of the calculations :)
Consider the function f(x)=1/2(x+1)^2-3. Use the preceding/following interval method to estimate the instantaneous rate of change at 𝑥 = 1.
1. The cost to transport 250 packages of cement 120 kilometers is $600. What will be the cost to transport 500 packages 300 kilometers?
9n + 7(-8 + 4k) use k=2 and n=3
5a-3.(a-7)=-3
2p-6=8+5(p+9)
To apply a diagnostic test, in how many ways can 14 students be chosen out of 25? if the order does not matter