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from vpython import *

d1=vec(1,3,1)

d=arrow(pos=vec(0,0,0), axis=vec(1,3,1))
#p=arrow(pos=vec(0,0,0), axis=vec(0,1,-3),color=color.red)
#q=arrow(pos=vec(0,0,0), axis=vec(-3,1,0),color=color.blue)
#r=arrow(pos=vec(0,0,0), axis=vec(2,0,-2), color=color.yellow)
s1=vec(3,-1,0)
s=arrow(pos=vec(0,0,0), axis=vec(3,-1,0),color=color.green)

c1=0.2*d1.cross(s1)
cd=arrow(pos=vec(0,0,0), axis=c1,color=color.blue)


    

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