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What are the direction cosines of the y-axis?
A0, 1, 1
B1, 0, 0
C0, 0, 1
D0, 1, 0
Answer & Solution
Correct answer: D. 0, 1, 0
The y-axis makes angles 90, 0 and 90 degrees with the three axes, so its cosines are 0, 1, 0.
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