Posted by **COFFEE** on Sunday, February 18, 2007 at 12:52am.

What are the x and y components of a vector a in the xy plane if it's direction is 215 degrees counterclockwise from the positive direction of the x axis and its magnitude is 12.9 m ?

you would be in the third quadrant, so both x and y are negative.

The values would have to satisfy two equations:

x^2 + y^2 = 12.9^2 and y/x = tan 35º

They are relatively easy to solve, I got x appr -10.567 and y appr. -7.399

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