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**1. Find the sine of the angle between and .**

**2. AxB = ABsin(alpha)**

**3. I know T = (3,1,0) and U = (2,4,0), and I calculated that V = TxU = (0,0,10), so the magnitude of V is 10.**

Then I did 10 = sqrt(10)*sqrt(20)*sin(alpha)

Divided 10 by sqrt(10)*sqrt(20), took the inverse sine, and obtained 45 degrees, which is incorrect.

Then I did 10 = sqrt(10)*sqrt(20)*sin(alpha)

Divided 10 by sqrt(10)*sqrt(20), took the inverse sine, and obtained 45 degrees, which is incorrect.