trigonometry problem Preform the indicated operation U=(-6,7), V=(-1,2), W=(-7,-5) V-(8W+7U) what are the coordinates of the answer?
Last edited by mr fantastic; December 15th 2010 at 08:48 PM. Reason: Re-titled.
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What is 8 times w and 7 times u?
U, V, and W are vectors. You do vector arithmetic as follows: (a,b) + (c,d) = (a+c, b+d) and k(a,b) = (ka, kb) Example: 8*(-7,5) = (8*-7, 8*5) = (-56, 40) (-56,40) + (-42, 49) = (-56 + -42, 40 + 49) = (-98, 89) Can you try to do the problem now?
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