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# Vector Direction

## Directional angles and direction cosines / components of the unit vector.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Vector Direction

by CK-12 //at grade
Calculate and describe the position of an object in three dimensions by describing the directions of vectors.
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• Video

## Unit Vectors

by CK-12 //at grade
Shows what unit vectors are and how to construct them.
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