A particle undergoes two displacements, measured from the positive x-axis, with

Question

A particle undergoes two displacements, measured from the positive x-axis, with counterclockwise positive. The ?rst has a magnitude of 11 m and makes an angle of 67? with the positive x axis. The resultant displacement has a magnitude of 10.1 m directed at an angle of 124? from the positive x axis.

Find the magnitude of the second displacement.(in units of m)

Find the angle of the second displacement
(measured from the positive x axis, with counterclockwise positive and within the limits of ?180? to +180?).

Explanation / Answer

It's ATAN2(-7.84009,-12.7303). Answer: -121.62725

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