Math Problem Statement

Four vectors start at the origin of the x y axes labeled O. Vector A is directed along the negative y axis and has a length of 8.00 meters. Vector B is located in the first quadrant, it makes an angle of 30.0 degrees with the positive y axis and has a length of 15.0 meters. Vector C is located in the third quadrant, it makes an angle of 25.0 degrees with the negative x axis and has a length of 12.0 meters. Vector D is located in the second quadrant, it makes an angle of 53.0 degrees with the negative x axis and has a length of 10.0 meters. - Four vectors starting at the origin

Compute the x- and y-components of the vectors A⃗, B⃗, C⃗, and D⃗ in (Figure 1).

Express your answer in meters.

Solution

To find the x- and y-components of each vector, we can use trigonometry. Let's break down each vector into its components:

Vector A⃗:

  • Given: Vector A is directed along the negative y-axis and has a length of 8.00 meters.
  • Components:
    • Ax=0A_x = 0 (since it lies along the y-axis, there's no x-component)
    • Ay=8.00mA_y = -8.00 \, \text{m} (since it points in the negative y direction)

Vector B⃗:

  • Given: Vector B is located in the first quadrant, makes an angle of 30.0 degrees with the positive y-axis, and has a length of 15.0 meters.
  • Components:
    • The angle with the positive x-axis: θB=9030=60\theta_B = 90^\circ - 30^\circ = 60^\circ
    • Bx=15.0m×cos(60)B_x = 15.0 \, \text{m} \times \cos(60^\circ)
    • By=15.0m×sin(60)B_y = 15.0 \, \text{m} \times \sin(60^\circ)

Vector C⃗:

  • Given: Vector C is located in the third quadrant, makes an angle of 25.0 degrees with the negative x-axis, and has a length of 12.0 meters.
  • Components:
    • The angle with the negative x-axis is 2525^\circ.
    • The angle with the positive x-axis: θC=180+25=205\theta_C = 180^\circ + 25^\circ = 205^\circ
    • Cx=12.0m×cos(205)C_x = 12.0 \, \text{m} \times \cos(205^\circ)
    • Cy=12.0m×sin(205)C_y = 12.0 \, \text{m} \times \sin(205^\circ)

Vector D⃗:

  • Given: Vector D is located in the second quadrant, makes an angle of 53.0 degrees with the negative x-axis, and has a length of 10.0 meters.
  • Components:
    • The angle with the positive x-axis: θD=18053=127\theta_D = 180^\circ - 53^\circ = 127^\circ
    • Dx=10.0m×cos(127)D_x = 10.0 \, \text{m} \times \cos(127^\circ)
    • Dy=10.0m×sin(127)D_y = 10.0 \, \text{m} \times \sin(127^\circ)

Now, let's compute the components:

Computation:

  • ( B

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Vector Components
Angles

Formulas

Vector component formula: x-component = length * cos(angle)
Vector component formula: y-component = length * sin(angle)

Theorems

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Suitable Grade Level

High School