freddye

A vector A lies in the xy plane. For what orientations of A will both of its components be negative? For what orientations will its components have opposite signs?

What is sign of vector components in given quadrant?

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goldr4k3

If the direction-angle of A is between 180 degrees and 270 degrees, its components are both negative. If a vector is in the second quadrant or the fourth quadrant, its components have opposite signs.

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burhn

The vector will have both negative components in the third quadrant. The components will have opposite signs in quadrants 2 and 4

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