This is what i got so far.

**-19 x 6 + -13(-13)= 55**

Now im a bit confused. Do I find each seperate square root angle betweeen the two?

**||u|| = ✓-19**^{2} + **6 ^{2}**

^{||v|| = }✓-13^{2} + (-13)^{2}

^{then i did 55/5} **✓146 = which then i did inverse cos and got a degree of like 24.44.**

Veteran
Mar 19, 2017