题目内容

A displacement vector D is given as 40.0 m long at an angle of 60.0 degrees NORTH of EAST. The Dx component and the Dy component of the vector are()

A. Dx = +34.6 m, Dy = +20.0 m.
B. Dx = +20.0 m, Dy = -34.6 m.
C. Dx = +20.0 m, Dy = +34.6 m.
Dx = -34.6 m, Dy = +20.0 m.
E. Dx = +34.6 m, Dy = -20.0 m.

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