Sunday, August 2, 2009

Angle of the difference of two vectors?

vA = (4.0m)i - (3.0m)j and vB = (6.0)i + (8.0m)j





What are (a) the magnitude and (b) the angle (relative to i) of vA? What are (c) the magnitude and (d) the angle of vB? What are (e) the magnitude and (f) the angle of vA+vB; (g) the magnitude and (h) the angle of vB-vA; and (i) the magnitude and (j) the angle of vA-vB? (State your angle as a positive number.) (k) What is the angle between the directions of vB-vA and vA-vB?

Angle of the difference of two vectors?
will do a few..a) |vA| = 5, b) angle is arctan [-3/4] + 2 pi.......


e) | vA + vB| =sqrt[125], f) angle is arctan[5/10],......k) pi since the are negatives of each other..you should be able to do these.


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