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
morpeh [17]
3 years ago
8

In the triangle shown above, if theta increases at a constant rate of 3 radians per minute, at what rate is x increasing in unit

s per minute when x equals 3 units
Mathematics
1 answer:
kvv77 [185]3 years ago
7 0
<span>X is increasing at the rate of 12 units per minute. Without the actual diagram of the triangle, this question is impossible to answer. However, doing a google search using your exact wording has given me several search results, some of which have a drawing of the triangle. I am going to assume that those drawings match the triangle you were given. If this is not the case, then this answer will be wrong, but should provide you enough information to be able to solve the problem on your own. First, the triangle is a right triangle with the hypotenuse having a length of 5 and X being the side opposite to angle theta. Now we need to create an equation that defines X in terms of theta. Since X is opposite to theta, and we know the length of the hypotenuse, the sine function comes to mind. So sin A = x/5 5sin A = x x = 5 sin A Now let's calculate the first derivative of that equation with respect to time. So d/dt[ x ] = d/dt[ 5 sin A ] dx/dt = 5 d/dt[ sin A ] dx/dt = 5 cos(A) * d/dt[ A ] dx/dt = 5 cos(A) * dA/dt Now we've been given dA/dt which is 3 radians per minute. But we need to calculate cos(A) when X equal 3. Since we know the hypotenuse, we can use the Pythagorean theorem to get the length of the adjacent side and from there calculate the cosine. So sqrt(5^2 - 3^2) = sqrt(25 - 9) = sqrt(16) = 4. And since cosine = adjacent/hypotenuse, we have 4/5 = 0.8. Now substitute the known values into the equation and solve. dx/dt = 5 cos(A) * dA/dt dx/dt = 5 * 0.8 * 3 dx/dt = 12 Therefore X is increasing at the rate of 12 units per minute at the moment X equals 3. Note: If the triangle you've been given does not have a hypotenuse of 5. Then THIS ANSWER IS WRONG. If you've been given a hypotenuse, the general equation will be: dx/dt = H * cos(A) * dA/dt Where H = given hypotenuse, dA/dt = rate of change in theta. So dx/dt = H * cos(A) * 3 dx/dt = H * sqrt(H^2 - 3^2)/H * 3 dx/dt = sqrt(H^2 - 9) * 3 dx/dt = 3*sqrt(H^2 - 9) So just plug in whatever value of H you have and you'll get the answer. And if you plug in 5, you'll see that the answer is still 12.</span>
You might be interested in
Write a compound inequality to represent all of the numbers between -4 and 6.
blondinia [14]
-4 < 6
Negative number always less than positive number
4 0
3 years ago
What is 1+1? It's so hard XD
Paha777 [63]

Answer:

2

Step-by-step explanation:

one+one=two

8 0
3 years ago
Read 2 more answers
HELP TIMED! WILL MARK BRAINLIEST Nolan began a savings account three years ago. He invested $100 at a 2% interest rate according
MAVERICK [17]
I believe it’s c.... I’m sorry if it’s wrong
6 0
3 years ago
You are in a bike race. When you get to the first checkpoint, you are 2525 of the distance to the second checkpoint. When you ge
svetoff [14.1K]
1/10 
or maybe even 16?
not too sure though


3 0
3 years ago
7w = 49 Can anybody help me with this one too?
lesantik [10]

Answer:

w=7.

Step-by-step explanation:

Divide 7 on both sides of the equation.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write the point-slope equation of the line that passes through (3,-1 and a slope of 2
    11·1 answer
  • NEEDED ASAP PLEASE HELP!!!!!!!!!!! LeBron James buys a basketball for $20 and a 3 pack of socks for $5.50. He has a coupon for 2
    10·2 answers
  • How do you calculate the area of a triangle?
    14·2 answers
  • Can someone help me fill in the blank
    7·2 answers
  • Find the quotient 50/-10
    11·2 answers
  • Simplify &amp;cm-4) - :m+5)-(m - 6)-(n+7)
    6·1 answer
  • Ethan had 81 CDs until he won c more in a contest. Choose the expression that shows how many CDs Ethan has now.
    14·1 answer
  • Math help please due today ill give you brainlist if correct !!!
    15·1 answer
  • Best answer gets brainliest
    10·1 answer
  • Hope u help me pls I love u
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!