MCV4U (Grade 12 Calculus and Vectors)

[fizafarman]

if |x|=13 and |y|=19 and |x-y|=22, find |x+y|.

 

[mmm4444bot]

Posting Guidelines (Summary)

Welcome to our tutoring boards! :) This page summarizes main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We don't do your homework. We prefer to help...

www.freemathhelp.com

 

[Dr.Peterson]

if |x|=13 and |y|=19 and |x-y|=22, find |x+y|.

Have you tried sketching the vectors, and thought about calculating angles?

Please tell us something about your own thinking, not just the problem itself.

 

[Steven G]

Here's a hint:
Let x = <a,b> and y=<c,d>