alleryProjection of a vector on a line is the dot product with the line's:
APosition vector
BCross product
CUnit vector
DZero vector
Answer & Solution
Correct answer: C. Unit vector
1. Let p be a vector of length one along the line.
2. Dotting the given vector with p gives the projection.
3. So it is the dot product with the unit vector along the line.
_Source: syllabus Mathematics Part II, Chapter 10, Vector Algebra._
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