Magnitude and direction of position vectors in 3D
9:34
Khan AcademyAshish Gupta
Magnitude and direction of position vectors in 3D
In this video, we look at ways to find the magnitude and direction of position vectors. We derive the formula for the magnitude of a position vector. We look at a few lazy ways to talk about direction of a vector before talking about the direction cosines. We also discuss why cosines are better at this than sine or tan.
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