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A straight line passes through
the point (1, 1, 1) makes an
angle 60° with the positive
direction of Z-axis, and th

By Lyla

A straight line passes through
the point (1, 1, 1) makes an
angle 60° with the positive
direction of Z-axis, and the
cosine of the angles made by it
with the positive directions of
the Y-axis and the X-axis are in
the ratio 3 : 1. What is the
acute angle between the two
possible positions of the line?
(a) 90° (b) 60 (c) 45°. (d) 30​

About the author
Lyla

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