Home › AP EAMCET › Mathematics › Coordinate Geometry: Direction Cosines and Direction Ratios › A line perpendicular to the x-axis has l equal to:
A line perpendicular to the x-axis has l equal to:
A0
B1
C-1
D1/2
Answer & Solution
Correct answer: A. 0
The angle with the x-axis is 90° and cos 90° = 0.
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