Math Problem Statement

Which of the following represents the vector v shown in the figure to the right?

Solution

To solve this problem, let's break down the information from the image:

Given:

  • A vector v\vec{v} is shown at an angle of 2626^\circ above the positive x-axis.
  • The magnitude of the vector is 2 units.

Goal:

We need to express the vector v\vec{v} in its component form, based on its magnitude and direction.

Approach:

A vector v\vec{v} can be expressed in component form as: v=(vx,vy)\vec{v} = (v_x, v_y) where vxv_x is the horizontal (x-axis) component and vyv_y is the vertical (y-axis) component.

The horizontal and vertical components are calculated as:

  • vx=vcosθv_x = |\vec{v}| \cos \theta
  • vy=vsinθv_y = |\vec{v}| \sin \theta

Here, the magnitude v=2|\vec{v}| = 2 and the angle θ=26\theta = 26^\circ.

Thus:

  • vx=2cos26v_x = 2 \cos 26^\circ
  • vy=2sin26v_y = 2 \sin 26^\circ

Solution:

So the vector v\vec{v} in component form is: v=(2cos26,2sin26)\vec{v} = (2 \cos 26^\circ, 2 \sin 26^\circ)

Correct Answer:

The correct option is D: (2cos26,2sin26)(2 \cos 26^\circ, 2 \sin 26^\circ).

Would you like further clarification or a deeper dive into any of these steps?


Here are 5 related questions you might find useful:

  1. How do you convert a vector given in magnitude and direction into its component form?
  2. How do sine and cosine functions relate to vector components in a 2D plane?
  3. What is the geometric interpretation of vector components?
  4. How would the components change if the angle were measured from the y-axis?
  5. Can you generalize the formula for converting a vector from polar to Cartesian form?

Tip: Always check whether the angle is measured from the x-axis or y-axis when determining vector components.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Vectors
Trigonometry
2D Coordinate Geometry

Formulas

v_x = |v| cos(θ)
v_y = |v| sin(θ)

Theorems

Component Form of a Vector

Suitable Grade Level

Grades 9-12