Interpreting Vector Directions: A=8 at 45°, B=8 at 180/225°

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Homework Help Overview

The discussion revolves around interpreting the directions of two vectors, A and B, with specified magnitudes and angles. Vector A has a magnitude of 8 units at an angle of 45 degrees, while Vector B also has a magnitude of 8 units but is described as pointing in the negative x direction, leading to confusion about its angle representation.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are exploring the correct interpretation of the angle for Vector B, questioning whether it should be represented as 180 degrees or 225 degrees based on its directional description.

Discussion Status

Some participants have provided interpretations of the angles, with one confirming that Vector B at 180 degrees aligns with its description of pointing in the negative x direction. However, there is still some uncertainty regarding the implications of the angle of 225 degrees.

Contextual Notes

The original poster expresses concern about the wording in the book regarding angles, indicating a potential ambiguity in the problem setup that may affect interpretation.

Skotster
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Am I interpreting this question correctly?

Vector A has a magnitude of 8 units and makes an angle of 45 degrees with the positive x axis. Vector B also has a magnitude of 8 units but points in the -x direction. ...

So, does that mean:

Vector A=8 at 45 degrees
Vector B=8 at 180 degrees

or

Vector A=8 at 45 degrees
Vector B=8 at 225 degrees

I know how to do the problem, it's just interpreting the book's wording on angles.

Thanks
 
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A at 45 degrees and B at 180 degrees. Saying vector B points in the -x direction is the same as saying vector B makes an angle of 180 degrees with the +ve x axis.
 
Thanks much
 
225 degrees would be opposite to A's direction not in "the -x direction. ... "
 

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