Math Problem Statement

R=53m 48° S of W Rx=? Ry=?

Solution

Given the vector R=53mR = 53 \, \text{m} at an angle of 4848^\circ South of West, you can find the components RxR_x (the horizontal component) and RyR_y (the vertical component) using trigonometry.

1. Understanding the Direction

  • The angle 4848^\circ South of West means the angle is measured clockwise from the West direction.

2. Calculating the Components

  • The horizontal component RxR_x is given by: Rx=Rcos(θ)R_x = R \cdot \cos(\theta) Since it's directed Westward, the sign will be negative.
  • The vertical component RyR_y is given by: Ry=Rsin(θ)R_y = R \cdot \sin(\theta) Since it's directed Southward, the sign will also be negative.

Substituting the values:

Rx=53cos(48)R_x = 53 \cdot \cos(48^\circ) Ry=53sin(48)R_y = 53 \cdot \sin(48^\circ)

Now, let's calculate these values:

Rx=53cos(48)530.669135.46mR_x = 53 \cdot \cos(48^\circ) \approx 53 \cdot 0.6691 \approx 35.46 \, \text{m} Ry=53sin(48)530.743139.38mR_y = 53 \cdot \sin(48^\circ) \approx 53 \cdot 0.7431 \approx 39.38 \, \text{m}

Final Components:

  • Rx35.46mR_x \approx -35.46 \, \text{m} (Westward)
  • Ry39.38mR_y \approx -39.38 \, \text{m} (Southward)

Would you like more details or have any questions?

Relative Questions:

  1. How would the components change if the vector were 48° North of West?
  2. Can you determine the magnitude of RR if only the components RxR_x and RyR_y are given?
  3. What is the physical significance of the negative signs in RxR_x and RyR_y?
  4. How would the components change if the angle were measured from South instead of West?
  5. What trigonometric identities are used to derive the horizontal and vertical components of a vector?

Tip: Always keep track of the direction when calculating vector components to avoid sign errors.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Vector Components

Formulas

Horizontal component: Rx = R * cos(theta)
Vertical component: Ry = R * sin(theta)

Theorems

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Suitable Grade Level

Grades 10-12