February 23, 2017

Homework Help: Physics

Posted by nelly on Monday, September 6, 2010 at 3:17pm.

Vector ~A has a magnitude of 7 and points in the positive x-direction. Vector ~B has a magnitude of 21 and makes an angle of 30â—¦ with the positive x-axis.
What is the magnitude of ~A − ~B ?

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