Their sum can be zero only if their magnitudes are equal and their directions are exactly opposite.
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Their DIFFERENCE will be zero if and only if they have the SAME direction.
Yes, if the dot product of two nonzero vectors v1 and v2 is nonzero, then this tells us that v1 is PERPENDICULAR to v2. :)
If 'A' and 'B' are vectors, and their magnitudes are equal, andtheir directions are opposite, then their vector sum is zero.
Vectors are said to be orthogonal if their dot product is zero.Vectors in Rn are perpendicular if they are nonzero and orthogonal.
yes, if they are at right angles to each other.