# Vector Cross Product question

glemkat
1. Find axb: Given the magnitude of lal=3 and the magnitude of lbl=2.

2. Since I have the magnitudes, I thought maybe I could use the equation of axb=lal lbl sin theta.

3. I thought since I am trying to find axb that I could use 90 as the angle theta to find axb. I am thinking that is not a good approach because theta isn't given in the problem. I also thought that I could possibly find theta by the dot product but again, I don't have the actual points to find it. I did calculate the (3)(2)sin90 and that is equal to 6, but I don't think that is the right approach. If someone can give me pointers on how to possibly start this, I will be able to finish it up.

Any help would be greatly appreciated!

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