3d vector component

The vector u = (3.9, u3), and the length of the vector u is 12. What is, is u3?

Final Answer:

u31 =  7.3485
u32 =  -7.3485

Step-by-step explanation:

m=12 x=3 y=9 z=u3 m2 = x2 + y2 + z2  z=m2x2y2=1223292=3 67.3485  u31=+z=+7.3485=3 6=7.3485
u32=z=7.3485=3 6



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