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Grade: 11

                        

if vectorA=i+j-k and vectorB=2i+3j+pk are mutually perpendicular vectors,find the value of p

7 years ago

Answers : (2)

gaurav kumar
10 Points
							

first find the dot product of the two vectors

A.B = (i+j-k).(2i+3j+pk) = 2+3-p = 0 (Since the dot productof two perpendicular vectors is zero).

 

7 years ago
G Ashwin -
24 Points
							

The scalar product to two vectors which are perpendicular is 0.

so,

A.B=2+3-p

A.B=5-p

since scalar product is 0

therefore

5-p=0

p=5

7 years ago
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