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
goldenfox [79]
3 years ago
9

Find the exact length of the curve. Use a graph to determine the parameter interval.. r = (cos(θ/2))^2

Mathematics
1 answer:
harkovskaia [24]3 years ago
8 0
Cos(2θ) = 2cos^2θ - 1, 

<span> cos^2(θ/2) </span>
<span>Solving  </span>
<span>cos^2θ = [1 + cos(2θ)]/2. </span>

<span>replacing θ with θ/2 gives. </span>
<span>cos^2(θ/2) = (1 + cosθ)/2. </span>

<span>length of a polar curve of the form r = f(θ) on [a, b] is given by: </span>
<span>L = ∫ √[r^2 + (dr/dθ)^2] dθ (from θ=a to b). 
hope this helps</span>
You might be interested in
12 is 15% of what?<br> HELP
oksian1 [2.3K]

Answer:

80

Step-by-step explanation

Write down the equation: (15 / 100) * x = 12

Solve for x: x = 12 / (15 / 100)

x = (12 * 100) / 15

or, x = 80

   Hope this helps!

8 0
3 years ago
Please help
Ira Lisetskai [31]

Answer:

285°

Step-by-step explanation:

105+180=285

7 0
3 years ago
Help me please!!!!!!!!!!!!
iVinArrow [24]

Answer: 0.25g<2.50.... g<10

Step-by-step explanation: Let us say that the number of gumballs bought is represented by the variable g. In this case, the question is asking how many gumballs can be bought without surpassing the price of $2.50. We know that each gumball is $0.25, therefore the number of gumballs we buy times $0.25 has to be less than $2.50. Hence, the inequality would be 0.25g<2.50. If we were to solve this then g<2.50/0.25-----> g<10. In conclusion, the number of gumballs you can buy has to be less than 10. Thank you!

6 0
3 years ago
Which of the following can be a solution to the inequality below?<br> 2x &gt; 6.<br> Pls send help
Citrus2011 [14]

Answer:

x>3

Step-by-step explanation:

you divide both sides by 2 then you get three. The sign remains the same.

3 0
3 years ago
if I went to store with 90.00 and spent 36.81 and got 20% off what would I have left need answer fast thanks
vichka [17]
I'm guessing the 20 percent off is from the $36.81 so you take 36.81 times 0.80 making it $29.448. Take 90 dollars and minus that amount.

Answer: $60.552 
Rounded Answer: $60.55 or $60.60 or $61

Not sure if this helped, but yeah.....
3 0
3 years ago
Other questions:
  • PLEASEEEEEE HELPPPP!!!!!!!!
    7·1 answer
  • Part A: Solve –vp + 30 &lt; 45 for p. Show your work.
    11·1 answer
  • Qual a expressão algébrica representa o perímetro das figuras a seguir:
    5·1 answer
  • Seven and fifty-one thousands
    10·2 answers
  • I NEED HELP LIKE NOW
    5·2 answers
  • To make lemonade , Kate uses 1 cup of lemon juice and 2 cups of sugar. If she makes a larger amount of lemonade with 10 cups of
    12·1 answer
  • Alexis spent 3/7 of his money.He gave 1/4 of the remainder to his sister.He had $120 left.How much did he have in the beginning.
    13·1 answer
  • Two random samples were taken to determine how often people in a community listen to the local radio station each month.
    14·1 answer
  • Please help I already know it’s not d
    9·2 answers
  • I need help this is due in like 20 minutes
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!