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CBSE - XI Science - Physics - Motion in a Plane

two vectors A = i^ + 2j^ + 3k^ and B = -i^ + j^ -k^ are in the same plane what is the angle made by A X B with the plane containing the vectors A and B.

Asked by Bholanath Beura 9th September 2013, 9:44 AM
Answered by Expert

Answer:

The cross product of two vectors is perpendicular to both the vectors.
Thus, if A and B are in the same plane, then the cross product is perpendicular to the plane containing the two vectors.
 
Thus the angle is 90.
Answered by Expert 9th September 2013, 10:44 AM

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