I've tried to find solutions to similar problems to see how this question should be solved but I didn't have much luck.
A rectangular-based prism is shown below. I need to determine the size of angle ABC using the vector dot product.
I know how to do the vector dot product for easier problems but this one has me a bit stuck.
I created a right triangle and worked out that 4^2 + 1^2 = 17^2 so AC (hypotenuse) = √17 and the angle would be arctan(1/4) which is approx. 14 degrees.
I'm just not sure where to take it from here and how to actually get angle ABC. I just need to know the steps required to get me there.
How would you do it?