Why must we consider the angle between vectors anti-clockwisely?

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SUMMARY

The discussion centers on the necessity of considering the angle between vectors in an anti-clockwise direction. This convention is not arbitrary; it is rooted in mathematical consistency and the standardization of vector operations. The anti-clockwise direction ensures uniformity in calculations, particularly in trigonometry and physics, where vector orientation plays a crucial role. Adhering to this convention facilitates clearer communication and understanding among mathematicians and scientists.

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Why when we consider the inclined angle between two vectors , we must consider the angle anti-clockwisely? What is the reason behind?
 
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No reason except "convention". We had to choose one way or the other- someone flipped a coin!
 

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