Find the component form of u + v given the lengths of u and v and the angles that u and v make with the positive x-axis. ||u|| = 3, O, = 5 ||v|| = 1, 0, = 3 u + v =

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Chapter8: Complex Numbers And Polarcoordinates
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## Problem Statement

Find the component form of **u + v** given the lengths of **u** and **v** and the angles that **u** and **v** make with the positive x-axis.

### Given Data:
- \( ||\mathbf{u}|| = 3 \),  \(\theta_u = 5^\circ\)
- \( ||\mathbf{v}|| = 1 \),  \(\theta_v = 3^\circ\)

### Component Form Calculation:
To find the component form of the vector sum **u + v**, we first convert each vector from its magnitude and angle to its component form.

For vector **u**:
- \( \mathbf{u}_x = ||\mathbf{u}|| \cos(\theta_u) \)
- \( \mathbf{u}_y = ||\mathbf{u}|| \sin(\theta_u) \)

For vector **v**:
- \( \mathbf{v}_x = ||\mathbf{v}|| \cos(\theta_v) \)
- \( \mathbf{v}_y = ||\mathbf{v}|| \sin(\theta_v) \)

Then, we sum the corresponding components of **u** and **v** to get **u + v**:
- \( (\mathbf{u} + \mathbf{v})_x = \mathbf{u}_x + \mathbf{v}_x \)
- \( (\mathbf{u} + \mathbf{v})_y = \mathbf{u}_y + \mathbf{v}_y \)

Combining these, we get the component form of **u + v**:

\[ \mathbf{u} + \mathbf{v} = \left( (\mathbf{u} + \mathbf{v})_x, \, (\mathbf{u} + \mathbf{v})_y \right) \]
Transcribed Image Text:## Problem Statement Find the component form of **u + v** given the lengths of **u** and **v** and the angles that **u** and **v** make with the positive x-axis. ### Given Data: - \( ||\mathbf{u}|| = 3 \), \(\theta_u = 5^\circ\) - \( ||\mathbf{v}|| = 1 \), \(\theta_v = 3^\circ\) ### Component Form Calculation: To find the component form of the vector sum **u + v**, we first convert each vector from its magnitude and angle to its component form. For vector **u**: - \( \mathbf{u}_x = ||\mathbf{u}|| \cos(\theta_u) \) - \( \mathbf{u}_y = ||\mathbf{u}|| \sin(\theta_u) \) For vector **v**: - \( \mathbf{v}_x = ||\mathbf{v}|| \cos(\theta_v) \) - \( \mathbf{v}_y = ||\mathbf{v}|| \sin(\theta_v) \) Then, we sum the corresponding components of **u** and **v** to get **u + v**: - \( (\mathbf{u} + \mathbf{v})_x = \mathbf{u}_x + \mathbf{v}_x \) - \( (\mathbf{u} + \mathbf{v})_y = \mathbf{u}_y + \mathbf{v}_y \) Combining these, we get the component form of **u + v**: \[ \mathbf{u} + \mathbf{v} = \left( (\mathbf{u} + \mathbf{v})_x, \, (\mathbf{u} + \mathbf{v})_y \right) \]
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