Home › TS EAMCET › Mathematics › Coordinate Geometry: Direction Cosines and Direction Ratios › Angle between ratios 1,-1,2 and -2,2,-4 is:
Angle between ratios 1,-1,2 and -2,2,-4 is:
A90°
B0°
C60°
D45°
Answer & Solution
Correct answer: B. 0°
The second set is -2 times the first, so the lines are parallel and the angle is 0°.
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