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If I prove the dot product of two vectors is zero, is it then assumed that the vectors are perpendicular or is an extra line of work required to prove why it means theyre perpendicular?

I know this is old, but for the background research, rennin is not found in human kidneys. That's actually a different enzyme called renin, so it's understandable for you to get it confused because the names are so frustratingly similar. Rennin is actually found inside a cow's fourth stomach to...