# A force of 200 N at 30° angle to the horizontal is used to drag an object 25 meters along the floor. Assuming that friction is zero, the amount of work done is best represented by ______. a. cos 30° (25 meters) x 200 N b. tan 30° (200 N) x 85 meters c. sin 30° (25 meters) x 200 N d. cos 30° (200 N) x 25 meters

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by Lincolnnooby602

2015-08-16T00:10:01+08:00

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To produce work, force must be parallel to distance therefore, the answer is d.

Let me do a proof to let you remember quickly:

We know from trigonometric identity of tangent function is

To let you remember quickly, let me prove it to you that:

(Please be guided by the picture I uploaded)

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