The Two Vectors (3 M)− (7 M)and (2 M)+ (3

question 9

Multiple Choice

The two vectors (3 m) − (7 m) and (2 m) + (3 m) − (2 m) define a plane (it is the plane of the triangle with both tails at one vertex and each head at one of the other vertices) .Which of the following vectors is perpendicular to the plane?

• A)(14 m)+ (6 m)+ (23 m)
• B)(−14 m)+ (6 m)+ (23 m)
• C)(14 m)− (6 m)+ (23 m)
• D)(14 m)+ (6 m)− (23 m)
• E)(14 m)+ (6 m)

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