Posted by ami on Sunday, August 22, 2010 at 6:22pm.
VECTOR A has a magnitude of 55. Ax is 26. What are the two possibilities for Ay?

PHY  bobpursley, Sunday, August 22, 2010 at 6:30pm
well, A can point in the +x,+y direction, or +x,y direction.
The angle between A and the x axis will be
theta=arccos 26/55
and Ay= +55sinTheta

PHY  Henry, Sunday, August 22, 2010 at 6:39pm
(26)^2 + Y^2 = (55)^2
676 + Y^2 = 3025
Y^2 = 3025  676 = 2349,
Y = + 48.47.
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