devmgnt
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Homework Statement
If B is added to C = 3.0î + 4.0ĵ, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of C. What is the magnitude of B?
Homework Equations
a = sqrt(ax2 + ay2)
The Attempt at a Solution
1. Found the magnitude of C
c = sqrt(cx2 + cy2) = sqrt(32 + 42) = 5
2. Added B to C and got this equation
5 = sqrt(ax2 + ay2) = sqrt(b2 + 52)
which obviously isn't right because I get the magnitude of B as 0. I'm not sure what I am doing wrong, but any guidance would be helpful. Thank you.