Vector addition- Positive x axis.

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Discussion Overview

The discussion revolves around the concept of vector addition, specifically focusing on the interpretation of angles relative to the positive x-axis. Participants are examining how angles are defined in the context of a given problem, including the use of positive and negative angles.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions the use of -60° in the problem, contrasting it with the given angle of θ₂=30° and seeking clarification on how these angles relate to the positive x-axis.
  • Another participant explains that counterclockwise from the +x axis is considered a positive angle, while clockwise is considered negative, which may clarify the confusion regarding angle definitions.
  • A participant expresses gratitude for the clarification provided by another, indicating that the explanation was helpful in understanding the topic.

Areas of Agreement / Disagreement

There appears to be some confusion regarding the use of angles in vector addition, with differing interpretations of positive and negative angles. The discussion does not reach a consensus on the correct interpretation of the angles involved.

Contextual Notes

The discussion may be limited by assumptions about the definitions of angles and their orientations, which could affect the understanding of vector addition in this context.

opus
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Please see the attached page to see what I'm talking about.
In the top right paragraph, it states to use "the positive direction of the x-axis".
It is given that ##θ_2=30°## and it shown visually at the bottom of the page.
In the problem it's using -60° and I'm not sure how they're getting that.
 
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Given pictures
 

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Here's the second vector by itself. Counterclockwise from the +x axis is a positive angle; clockwise from the +x axis is negative.

angle.gif
 

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Likes   Reactions: opus
Exactly what I was looking for. Thank you @jtbell.
 

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