The equation of line equally inclined to co-ordinate axes and passing through (-3, 2, -5) is

Answer (Detailed Solution Below)

Option 1 :
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NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

Detailed Solution

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Concept:

Equation of the line in 3D:

If a line passes through a point  and having direction cosines  then the equation of the line is given by:

Direction cosines of the line equally inclined to co-ordinate axes:

If a line is equally inclined to the co-ordinate axes then the direction cosines of the line are 

 

Calculation:

It is given that the line is equally inclined to the co-ordinate axes.

Therefore, the direction cosines of the line are 

It is given that the line passes through (-3, 2, -5).

Therefore, we have  and .

Thus, the equation of the line is given as follows:

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