Direction Cosines Angle Relation (Jee Mains) | ExamDuo
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3D Coordinates and Direction Ratios
Medium
Direction Cosines Angle Relation
If a line makes angle α , β , γ with the axes respectively , then cos 2α + cos2β + cos2γ =
SELECT ONE OPTION
A
-2
B
-1
C
1
D
2
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