Each of two vectors, and 2, lies along a coordinate axis in the x-y plane. Each

Question

Each of two vectors, and 2, lies along a coordinate axis in the x-y plane. Each vector has its tail at the origin, and the dot product of the two vectors is Di . D,--|Di | D2L vvhich possibility is correct? O Di and D2 both lie along the positive x-axis. O D, lies along the positive x-axis. D2 lies along the negative x-axis. O Di and D2 both lie along the positive y-axis D, lies along the negative x-axis. D2 lies along the negative y-axis. O D1 lies along the positive y-axis. D2 lies along the negative y-axis.

Explanation / Answer

Correct answer: Option (B): D1 lies along the pos. x axis. D2. Lies along neg. x axis

When both vectors will be in x axis but opposite to each other, then the angle between them will be 180° and cos180° is -1. So option (B) is correct.

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