Trouble with some vector problems

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Homework Help Overview

The discussion revolves around a vector problem involving the vector R = 1.50 i + 2.50 j + 2.89 k and the task of finding the angles between this vector and the x, y, and z axes. The subject area is vector mathematics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the general concept of angles between vectors and consider which vectors represent the axes. There is an attempt to use the tangent function to find the angle, but it is noted that this approach yielded an incorrect result. Questions arise about the relationship between the scalar product and the angle between vectors.

Discussion Status

The discussion is ongoing, with participants questioning the methods used and exploring the concept of the scalar product. Some guidance regarding the terminology of vector products has been provided, but there is no explicit consensus on the approach to solving the problem.

Contextual Notes

Participants are discussing the angles in the context of vector mathematics, with some uncertainty about the correct methods and terminology related to vector products.

ramin86
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A vector is given by R = 1.50 i + 2.50 j + 2.89 k

Find the angle between R and the x, y, and z axis.

How would I do this?
 
Physics news on Phys.org
1. What, in general, gives the angle between two vectors?
2. Which vectors might you use to represent the axes?
 
Well I tried tangent of y/x, and got the angle, but it turned out to be wrong
 
Have you heard of one of these products?
"dot product", "scalar product", "inner product"?
(It's different names on the same "thing")
 
lol well i have heard of a scalar product, not the other two however.
 
They're other names for the scalar product.
Now:
How is the value of the scalar product between two vectors related to the angle between them?
 

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