Mathematics A-Level
Direction cosines in 3-D
What Direction cosines in 3-D means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Direction cosines in 3-D
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Reference: Pearson Edexcel
A way of describing the direction of a three-dimensional vector, used instead of a single bearing, alongside angles with the axes.
Topics that use Direction cosines in 3-D
- Vectors (Pearson Edexcel A-Level)
Related terms
- component
- component form
- Component form in two and three dimensions
- Conversion between component and magnitude/direction form
- Direction and quadrant awareness
- Displacement vector
- Distance
- Equilibrium
Using Direction cosines in 3-D in the exam
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