Angle with respect to x or y axis.

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Homework Help Overview

The discussion revolves around determining angles with respect to the x-axis and y-axis in a two-dimensional space, particularly in the context of vector analysis. Participants are exploring the conventions and calculations involved in measuring angles from these axes.

Discussion Character

  • Conceptual clarification, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are questioning how to correctly identify the starting point for measuring angles with respect to the x-axis or y-axis. There is discussion about the implications of measuring angles counterclockwise and the specific quadrant in which a vector lies. Some participants are sharing their methods for calculating angles based on vector direction.

Discussion Status

The discussion is ongoing, with participants sharing their reasoning and attempting to clarify misunderstandings. Some guidance has been offered regarding the measurement of angles, but there is still uncertainty about specific calculations and interpretations of the problem.

Contextual Notes

Participants express frustration over the lack of clarity in the problem statements regarding angle measurement conventions. There are indications of differing interpretations of what is meant by "with respect to positive x-axis," leading to confusion in calculations.

ysk1
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Could anyone please tell me what angle I need to find when the question asks to find an angle with respect to x axis. (or y axis)
Thank you.
 
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with respect to the x or y: let's say that your angle is in 2-space or a 2-d angle. If you want to measure it with respect to the x-axis it means that you start on the x - axis and move counter clockwise to your angle. the same logic is used for the y as well
 
Which side of x-axis (positive side or negative side) should I choose to start moving counter clockwise to my angle?
 
usually it is the positive side
 
A question tells me to find an angle of a vector F with respect to positive x-axis.

Suppose the vector F points 17.1 degrees west of north. Then if I were to find angle of this vector with respect to positive x-axis, I add 17.1 degrees and 90 degrees and get 107.1 degrees, right?
On a question that asked to find the angle with respect to positive x-axis, I solved it as stated above, but it's wrong.
What is wrong with my method?
 
your angle is in the second quadrant. so you should do this 180-17.1 = 162.9 degrees.
 
I tried 162.9 degrees but I was told it's wrong. It's very frustrating.. :(
The question should explain what it means by "with respect to positive x-axis".
What should I do?
 
Last edited:
I still don't get this. Please tell me how to do this.
 
Now I got it. I had made a small mistake.
Mesmer, thank you for your help. =)
 

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