How do you deduce that two vectors are perpendicular?

1.	How do you deduce that two vectors are perpendicular?
Answer» Solution :If TWO vectors `vecA` and `vecB` are perpendicular to each other than their scalar product `vecA.vecB=0` because `cos90^(@)=0`. Then the vectors `VECAANDVECB` are said to be mutually ORTHOGONAL.

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