P and Q are vectors in the X , Y plane, have the same magnitude, and are perpendicular to each other. If Q=3.0i+4.0j. What is P?
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Generally, posting questions without showing what you have tried will get your question downvoted. Please show what you have tried so far. – Steven Alexis Gregory Jul 15 '15 at 02:30
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I cant really figure it out because if they are perpendicular to each other why is it they are only in X, Y plane. ? – Vince Espiritu Jul 15 '15 at 02:32
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There are infintely many answers because there are two directions that are perpendicular to $Q$ in the plane. Hint: let $P = ai + bj$ and solve $P \circ Q = 0$ – Steven Alexis Gregory Jul 15 '15 at 02:39
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I dont know if this is right. My answer is P= -4.0 i + 3.0 j or P= 4.0 i - 3.0 j ? – Vince Espiritu Jul 15 '15 at 03:14
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I dont know if this is right. My answer is P= -4.0 i + 3.0 j or P= 4.0 i - 3.0 j ?
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Yes, that's them. You might as well answer your own question. – Steven Alexis Gregory Jul 15 '15 at 23:24