3D Vector Calculations: A Beginner's Guide

AI Thread Summary
The discussion focuses on 3D vector calculations, emphasizing the use of direction cosines and angles in solving problems. A specific homework problem is referenced, which involves applying the cosine rule for vectors. The participant expresses uncertainty about how to begin the calculations and seeks guidance without wanting the solution provided outright. Resources for understanding direction angles and cosines are shared to aid in the learning process. Overall, the thread highlights the importance of foundational concepts in 3D vector analysis for beginners.
ThomasHW
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Homework Statement


http://www.tunerspec.ca/school/3dvector.jpg


Homework Equations


c^{2} = a^{2} + b^{2} - 2ab \times cos \alpha
\frac{sin a}{a} = \frac{sin b}{b}


The Attempt at a Solution


I really don't know where to get started... I don't want someone to just do it for me - just a little help would be nice. :)
 
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