If a vector has direction angles A=pi/4 and B=pi/3, find the third direction angle Y.

Leave a tip for good service: https://paypal.me/jjthetutor

Student Solution Manuals: https://amzn.to/2WZrFnD

More help via http://jjthetutor.com

Download my eBooks via http://payhip.com/jjthetutor,

paperback via http://amazon.com/author/jjthetutor.