Let A(-1, 2, 1) and B(4, 3, 5) be two gi...

Let `A(-1, 2, 1) and B(4, 3, 5)` be two given points. Find the projection of AB on a line which makes angle `120^(@) and 135^(@)` with Yand Z-axes respectively, and an acute angle with X-axis.

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The correct Answer is:

`60^(@) (2-2sqrt(2))` units

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