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arildno
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When we, however, look at the law of cosines for vectors of fixed magnitudes, we basically can estimate the maximal magnitude of the difference vector IF we allow the components to change (that's different from the present problem!)
In THAT case, we have found out that the maximal magnitude of the difference vector is the sum of the magnitudes of the two other vectors.
In THAT case, we have found out that the maximal magnitude of the difference vector is the sum of the magnitudes of the two other vectors.