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
bearhunter [10]
2 years ago
8

%20if%20%5C%3A%20%20x%3Da%20%28%20%20%5CTheta%20%2B%20sin%20%20%5CTheta%20%29%20%2C%20y%3D%20a%20%281-%20Cos%20%20%5CTheta%20%29%20%5C%3A%20%20at%20%5C%3A%20%20%20%5CTheta%20%3D%20%5Cfrac%7B%CF%80%7D%7B2%7D%20%20%5C%5C%20%20%5C%5C%20%20%5C%5C%20%20%5C%5C%20%20%5C%5C%20" id="TexFormula1" title=" \sf \large \: find \: \frac{dy}{dx} \: if \: x=a ( \Theta + sin \Theta ) , y= a (1- Cos \Theta ) \: at \: \Theta = \frac{π}{2} \\ \\ \\ \\ \\ " alt=" \sf \large \: find \: \frac{dy}{dx} \: if \: x=a ( \Theta + sin \Theta ) , y= a (1- Cos \Theta ) \: at \: \Theta = \frac{π}{2} \\ \\ \\ \\ \\ " align="absmiddle" class="latex-formula">
Kindly Don't Spàm!
Thanks!!!!​
Mathematics
1 answer:
solong [7]2 years ago
4 0

<u>Given </u><u>:</u>

<u>\:  \:  \:</u>

  • \rm \large \: x = a ( \Theta + Sin  \Theta )

<u>\:  \:  \:</u>

  • \rm \large y = a ( 1 - cos   \: \Theta )

\:  \:

<u>Now , x = a ( θ + sin θ )</u>

<u>\:  \:</u>

<h3><u>Diff </u><u>w.</u><u>r</u><u>.</u><u>t</u><u> </u><u>"</u><u> </u><u>θ</u><u> </u><u>"</u></h3>

<u> </u>

<u>\:  \:  \:</u>

  • <u>\rm \large\frac{dx}{dθ }  = a \:  \frac{d}{dθ} (θ  +   \sin\theta )</u>

<u>\:  \:</u>

  • <u>\boxed{ \rm \large\underline{  \frac{dx}{d \theta} = a(1 +  \cos \theta )  }}</u>

<u>\:  \:</u>

<u>Now </u><u>y </u><u>=</u><u> </u><u>a </u><u>(</u><u> </u><u>1</u><u>-</u><u>c</u><u>o</u><u>s</u><u>θ</u><u>)</u>

<u>\:  \:</u>

<u>Diff </u><u>w.</u><u>r</u><u>.</u><u>t</u><u> </u><u>"</u><u> </u><u>θ</u><u> </u><u>"</u><u> </u><u>we </u><u>get </u><u>.</u>

<u>\:  \:</u>

  • <u>\rm \large   \frac{dy}{d \theta} = a \frac{d}{d \theta} (1 - cos \theta)</u>

<u>\:  \:  \:</u>

  • <u>\boxed{ \rm \large \underline{   \frac{dy}{d \theta} = a   \sin \theta}}</u>

<u>\:  \:  \:</u>

<u>From</u><u> </u><u>eqn </u><u>(</u><u> </u><u>1</u><u> </u><u>)</u><u> </u><u>&</u><u> </u><u>(</u><u> </u><u>2</u><u> </u><u>)</u>

<u>\:  \:</u>

  • <u>\rm \large  \frac{dy}{dx}  =   \frac{ \frac{dy}{d \theta} }{\frac{dx}{d \theta}}</u>

<u>\:  \:  \:</u>

  • <u>\:  \:  \:  \rm \large =  \frac{ \cancel{a} \: sin \theta}{ \cancel a \: (1 + cos \theta)}</u>

<u>\:  \:</u>

  • <u>\rm \large \:  =  \frac{sin \theta}{1 +  \cos \theta }</u>

<u>\:  \:  \:</u>

  • <u>\rm \large \:  \frac{2 \sin( \frac{\theta }{2} ) cos\frac{\theta }{2} }{2 \: cos ^{2} \frac{\theta }{2}} \:  \:  ......(sin \: a \:  = 2 \: sin \frac{a}{2} \: cos \frac{a}{2} 1 +  \: cos \: a \:  = 2cos ^{2}  \frac{a}{2} )</u>

<u>\:  \:</u>

  • <u>\rm \large \:  \frac{dy}{dx}  =   \frac{sin \frac{ \theta}{2} }{cos  \frac{ \theta}{2} }</u>

<u>\:  \:</u>

  • <u>\rm \large \:  \frac{dy}{dx}  = tan \frac{ \theta}{2}</u>

<u>\:  \:</u>

  • <u>\rm \large \: ( \frac{dy}{dx}  )  = tan \frac{ \frac{ \theta}{2} }{2}</u>

<u>\:  \:</u>

  • <u>\rm \large \:  = tan( \frac{ \theta}{4} )</u>

<u>\:  \:</u>

  • <u>\boxed{ \rm \large \underline{ ( \frac{dy}{dx} ) =  \frac{\pi}{2}  = 1}}</u>

<u>\:  \:</u>

Hope Helps!:)

You might be interested in
I need the answer fore both plsss
grandymaker [24]

Answer:  6i) 6a² - 2ab

               6ii) -2b³

               6iii) b³ + 7b² - 49b

<u>Step-by-step explanation:</u>

6i)   (a + b)(5a - 3b)             +    (a - 3b)(a - b)

=    5a² - 3ab + 5ab - 3b²   +    a² - ab - 3ab + 3b²

=    5a² + 2ab - 3b²             +   a² - 4ab + 3b²

= 6a² - 2ab

6ii)    (a - b)(a² + b² + ab)              -  (a + b)(a² + b² - ab)

=   a³ + ab² + a²b - ab² - a²b - b³ -  (a³ + ab² - a²b -ab² + a²b + b³)

=   a³ - b³                                      -  (a³ + b³)

=   a³ - b³                                      - a³ - b³

= -2b³

6iii) (b² - 49)(b + 7)             +     343

=     b³ + 7b² - 49b - 343    +    343

=     b³ + 7b² - 49b

You are allowed a maximum of 3 questions.

Please post #7 on a different question.

5 0
3 years ago
3y + 2 + 2y + 5 =x + y + 2y – 4 =
aalyn [17]

Answer:

This is your answer ☺️. If I'm right so,

Please mark me as brainliest. thanks!!!

7 0
3 years ago
How to find volume of the liquid
VladimirAG [237]
Volume is equal mass by density
4 0
3 years ago
Read 2 more answers
An angle measures 25 what is the measure of its complement
Zanzabum
The answer is 25 because u said it was 25
5 0
4 years ago
Two boats sail away from a buoy making a 90 degree angle. The first boat is 165 meters away and is traveling at 25 m/s. The seco
NikAS [45]

Answer:


Step-by-step explanation:

lets say in the shown triangle x=165

so speed \frac{dx}{dt} =25

and  \frac{dy}{dt} =35


Also since distance = speed* time

time = pi minutes = pi/60 seconds

y = \frac{35\pi \pi }{60}

y = \frac{7\pi }{12}


Now using the pythagorean :

x^2+y^2=z^2\\so \\165^2+(\frac{7\pi }{12} )^2 =z^2

<u>derivate the equation so  we get :</u>

x\frac{dx}{dt} +y\frac{dy}{dt} =z\frac{dz}{dt} \\165*25+35*\frac{7\pi }{12}=\sqrt{165^2+(\frac{7\pi }{12})^2} *\frac{dz}{dt}


\frac{dz}{dt} =25.387 m/s

So Rate of change = <u><em>25.387 m/s</em></u>


5 0
3 years ago
Other questions:
  • A cup of coffee has approximately 310 mg of caffeine. Each hour, the caffeine in your system decreases by about 35%. How much ca
    8·1 answer
  • How do I solve this using the system of equations?
    15·1 answer
  • Convert 12 kg to pounds used 1 kg ≈ 2.2 lb.
    7·1 answer
  • A fruit salad recipe requires 20 cups of blueberries, 22 cups of strawberries, and 18 cups of grapes. To make a batch with 3 cup
    15·2 answers
  • Hadley is loading 625 coment onto small pallets.Each pallet holds 5 bags .How many pallets will Hadley need?
    13·1 answer
  • Helppp please I have limited time
    11·2 answers
  • The product of some negative number and 10 less than three times that number is 8 . find the num
    12·1 answer
  • What is x+5x+2-4x=+2
    11·2 answers
  • Lucia made a scale drawing of a game room. The pool table is 3 inches long in the drawing. The actual pool table is 9 feet long.
    12·1 answer
  • Please help:) i would appreciate it lol
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!