- #1
blazeuofa
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Homework Statement
Vector A = (2x-y)m and Vector B= (x+ay)m (a is alpha, m is meters)
If |A+B|=5m, determine the possible values of a.
Homework Equations
The magnitude of A= sqrt 5
The Attempt at a Solution
|A^2 + B^2|=5^2
|(2x-y)^2 + (x+ay)^2|= 5^2
|(2x-y)^2 + (x+ay)^2|= 25
I cannot figure out how to solve this problem. Please help!