Basic trigonometry question regarding knee angle

In summary, The conversation is about a basic trig question, but it turns out that it only requires knowledge of algebra. The problem involves finding the distance between two given points, and does not require any knowledge of vectors or trigonometry.
  • #1
joeblow001
1
0
The screen shot of the question is attached, this is apparently a basic trig question but it doesn't feel that way. Please explain as much as possible! Thanks!
 

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  • #2
Homework questions should be posted in the appropriate homework forum. Follow the template there and make sure you explain where you need help at. That way you can get the best help possible!
 
  • #3
You don't need any trig, just algebra. Follow Drakkith's suggestion if you still need help.
 
  • #4
Do they do vectors in algebra? I don't remember that.
 
  • #5
Drakkith said:
Do they do vectors in algebra? I don't remember that.

you don't need vectors or trig, just algebra. You're given the coordinates of two points and asked to find the distance between them. That's just algebra
 
  • #6
phinds said:
you don't need vectors or trig, just algebra. You're given the coordinates of two points and asked to find the distance between them. That's just algebra

Ah, ok. I just glanced at it and saw vectors.
 

1. What is the purpose of measuring knee angle using trigonometry?

The purpose of measuring knee angle using trigonometry is to determine the degree of flexion or extension in the knee joint. This information can be used to assess the range of motion in the knee and to monitor changes in knee function over time.

2. How is trigonometry used to measure knee angle?

Trigonometry is used to measure knee angle by using the principles of right triangles. The knee joint is considered the vertex of the triangle, with the femur and tibia forming the adjacent and opposite sides. By measuring the lengths of these sides, the angle of the knee joint can be calculated using trigonometric functions.

3. What is the relationship between knee angle and knee function?

The relationship between knee angle and knee function is that a larger range of motion in the knee joint typically indicates better knee function. This is because the knee joint needs to be able to move through a certain range of motion in order to perform activities such as walking, running, and jumping.

4. How does knee angle change during different activities?

Knee angle can change during different activities depending on the range of motion required in the knee joint. For example, during walking, the knee joint typically goes through a range of motion of approximately 60-70 degrees, while during squatting, the knee joint may go through a larger range of motion of 90-100 degrees.

5. What factors can affect knee angle measurements?

There are several factors that can affect knee angle measurements, including differences in individual body proportions, joint laxity, and muscle strength. Additionally, the position of the individual and the method used to measure knee angle can also impact the accuracy of the measurement.

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