Monday 9/13/2010

Vector = quantity with magnitude and direction

From mag & dir to components:
   OppositeSide = H*sin(theta)
   AdjacentSide = H*cos(theta)

From components to mag & dir:
   H = sqrt( opp^2 +adj^2 )
   theta = arctan( opp / adj )

add vectors - put them tip to tail
subtract vectors - first negate subtrahend, then add, i.e.,
	v1 - v2 = v1 +(-v2)




Tue 9/14