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UPSC NDA 2 2012 Mathematics Paper

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Question : 60

Total: 120

What is the equation to the straight line passing through (a,b,c) and parallel to z-axis?

‌
x−a
1
=‌
y−b
0
=‌
z−c
0
‌
x−a
0
=‌
y−b
0
=‌
z−c
1
‌
x−a
0
=‌
y−b
1
=‌
z−c
0
‌
x−a
0
=‌
y−b
1
=‌
z−c
1

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