1. Consider the lines x = -1+ 2s 3 – z l1 : 2 and l2 : y= s 4 -2 z = 5+ s а. Find two unit vectors that are parallel to l1. b. Determine the acute angle between l1 and l2. (Express your answer in terms of an inverse trigonometric expression).

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1. Consider the lines
x = -1+ 2s
x – 5
l1 :
2
3 - z
and l2 : y= 8
-2
4
z = 5+ s
а.
Find two unit vectors that are parallel to l1.
b. Determine the acute angle between l1 and l2.
(Express your answer in terms of an inverse trigonometric expression).
Transcribed Image Text:1. Consider the lines x = -1+ 2s x – 5 l1 : 2 3 - z and l2 : y= 8 -2 4 z = 5+ s а. Find two unit vectors that are parallel to l1. b. Determine the acute angle between l1 and l2. (Express your answer in terms of an inverse trigonometric expression).
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