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
AURORKA [14]
2 years ago
12

Find dy/dx any one x=acost , y=asint​

Mathematics
1 answer:
dangina [55]2 years ago
8 0

Answer:

x=a \cos t \implies \dfrac{dx}{dt}=-a \sin t

y= a \sin t \implies \dfrac{dy}{dt}=a \cos t

Using the chain rule:

\begin{aligned}\implies \dfrac{dy}{dx} & =\dfrac{dy}{dt} \times \dfrac{dt}{dx}\\\\& = a \cos t \times \dfrac{1}{-a \sin t}\\\\& = \dfrac{a \cos t}{-a \sin t}\\\\& = - \dfrac{\cos t}{\sin t}\\\\& = - \cot t\end{aligned}

You might be interested in
Amir buys a new car for £16470. The value of the car will depreciate by 2% each year. Work out how much amir's car will cost aft
Ronch [10]

Answer:

Amir's car will cost £10348.88 after 23 years.

Step-by-step explanation:

I finally found a UK human!

This is compound interest so you have to find a decimal multiplier and multiply that with £16470 to the power of 23.

The decimal multiplier would be 0.98. This is because you do 100% - 2% as depreciating basically means a decrease, which gives you 98% and then you divide that by 100 to get your decimal multiplier - 0.98.

16470 × 0.98^{23} = £10348.88

I hope that helps you!! ^-^

7 0
2 years ago
How do you identify the angle of rotation including the direction
yarga [219]

In rotation, the angle through which the plane figure is rotated is called the point of a figure through a specified angle and direction about a fixed point. Identify the corresponding vertices of the rotation.

6 0
3 years ago
31,680 ft = mi<br> A. 6 <br> B. 18 <br> C. 60 <br> D. 2,640
Vlad1618 [11]
5280 feet = 1 mile
31,680 feet = x miles

31,680/5,280 = 6

31,680 feet = 6 miles.

Your answer is A. 6.
6 0
2 years ago
Can someone help me with this math homework please!
azamat

It is not necessary that the function decreasing over a given interval always be negative.

A function f(x) (value) decreases as x increases.

This does not mean that value of f(x) is negative.

It can have positive number as range.

7 0
2 years ago
Read 2 more answers
Can I have some help I’ll mark brainliest
Juli2301 [7.4K]
45/45/90 triangle has side ratios s/s/sroot2
leg = root 5
Other leg is also root 5
X is Hypotenuse which would be root 5 * root 2
root 5*2 = root 10
6 0
2 years ago
Other questions:
  • 7^(4) x 7^(-8) x 7<br><br> Rewrite the expression using the base only once.
    14·1 answer
  • How is a table helpful when constructing equations
    10·1 answer
  • Determine whether the relation o defined on ℤ is reflexive, symmetric, or transitive. The relation o on ℤ is defined as follows:
    14·1 answer
  • 20. Please help. What is the length of PD⎯⎯⎯⎯⎯⎯⎯⎯?
    7·2 answers
  • What is 67.4475 to the nearest cent
    15·2 answers
  • Suppose that the probability that a child living in an urban area in the United States is obese is 20%. If a social worker sees
    13·1 answer
  • Please help me please
    5·2 answers
  • Marilyn is a salesperson at Open to Clothes. Each month she earns $650 plus 6% of her total monthly sales. How much did she earn
    8·1 answer
  • Steps for showing percent of 2028÷30%
    14·2 answers
  • I ain't never seen too pretty best friends it's always one of them got to be ugly heeeeeellllllpppp!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!