Question

Is the vectors which act along the same line whose angle between them can be 0 degree or 180 degree are called orthonogal vector



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Answer 1

Answer:

Two vectors are orthogonal if the angle between them is 90 degrees. Thus, using (**) we see that the dot product of two orthogonal vectors is zero. Conversely, the only way the dot product can be zero is if the angle between the two vectors is 90 degrees (or trivially if one or both of the vectors is the zero vector).