1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fredd [130]
3 years ago
13

Which of the following parametric equations are equivalent to the polar equation r=3 cos theta

Mathematics
2 answers:
Allushta [10]3 years ago
5 0
To solve the problem you must know that to change from Cartesian to polar coordinates you must write:
 x = rcos (θ)
 Where "r" is the radius
 Likewise y = rsin (θ)
 Therefore, in the expression r = 3cos (θ) one can write r as:
 r = x / cos (θ)
 So:
 x / cos (θ) = 3cos (θ)
 x = 3cos ^ 2 (θ)
 The same for y ...
 y = rsin (θ)
 y = 3cos (θ) sin (θ).

  Finally the correct answer is option 2.
 x = 3cos ^ 2 (θ) y = 3cos (θ) sin (θ).
cupoosta [38]3 years ago
3 0

Answer:

B

Step-by-step explanation:

You might be interested in
A person died leaving property worth rs.4000.40. His widow get 0.125 of the property and his son got 0.4 of the remainder. What
belka [17]

Answer:

Widow's Share = Rs 500.05

Son's share = Rs 1400.14

Step-by-step explanation:

Property = 4000.40

Widow get share = 0.125

So, Share of Widow = 0.125 * 4000.40

Widow's Share = Rs 500.05

Remaining Property = 4000.40 - 500.05

Remaining Property = 3500.35

Son's share = 0.4 * 3500.35

Son's share = Rs 1400.14

6 0
3 years ago
18 is what percent of 42?
Fittoniya [83]

Answer:

42.86

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How would you graph this
atroni [7]

Answer:

always start at the origin and X go before Y

6 0
3 years ago
Read 2 more answers
Please help asap 25 pts
beks73 [17]
y=ax^2+bx+c\\\\\text{Axis of symmetry:}\ x=\dfrac{-b}{2a}


\text{We have:}\\\\y=4x^2+16x-18\\\\a=4;\ b=16;\ c=-18\\\\x=\dfrac{-16}{2\cdot4}=\dfrac{-16}{8}=-2

Answer: A.
6 0
3 years ago
What is the same as 15.39÷100
marysya [2.9K]

1.539 divided by 10 which equal to 0.1539

7 0
2 years ago
Other questions:
  • A bus travels 6 hours at a constant speed of 36 miles per hour.
    5·2 answers
  • Jackson Middle School has 4 students in choir for every 1 student in band. If there are 48 students in band, how many students a
    10·1 answer
  • What is 9/8 in simplest from
    11·1 answer
  • A number is less than twelve
    6·2 answers
  • The ratio boy to girl in me.baker social studie class is 2 to 3 if there are 30 total students in class how many girls are in th
    6·1 answer
  • Plz answer this asap
    9·2 answers
  • 8^5 = 2^2m+3<br><br><br> Solve m
    14·1 answer
  • HELLO Everyone ....I hope your safe and doing welll :))) anywayyyys have a good day:))
    9·2 answers
  • Solve for x.<br> 30<br> 18<br> х<br> A. 35<br> B. 32<br> OC. 22<br> D. 24
    13·1 answer
  • On a map, the scale is 1 inch = 40 miles. What is the actual distance for 3.25 inches shown on the map?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!