UPSC NDA 2 2012 Mathematics Paper

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Question : 57 of 120
 
Marks: +1, -0
What is the angle between the lines ‌
x−2
1
=‌
y+1
−2
=‌
z+2
1
and ‌
x−1
1
=‌
2y+3
3
=‌
z+5
2?

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