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What is the angle made by the vector shown in the figure, with the z-axis?

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in Engineering Mechanics by (701k points)
What is the angle made by the vector shown in the figure, with the z-axis?

(a) 45°

(b) 60°

(c) 30°

(d) 90°

The question was asked in an international level competition.

My question is based upon Dot Product and Cross Product topic in portion Force Vectors of Engineering Mechanics

1 Answer

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Best answer
Right choice is (c) 30°

For explanation I would say: The question is the tricky one, just the imagination of the viewer is to be enhanced. But is one needs to go with the calculation, one can go and the answer would be 30°. Or simply it is 90° – 60° = 30°.

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