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Drakkith said:Do they do vectors in algebra? I don't remember that.
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
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.
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.
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.
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.
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.