Question

How do u know or remember which vector to take first in vector cross products? Evrytime I try solving vector cross product problems, it always has the complete opposite signs, any tricks to remember this?

Answer 1

Answer:

In this version, we imagine that the x-vector (the first in →x×→y) hinges at the origin and rotates into the y-vector. If the fingers of the right hand curve along the direction of that arcing route from x to y, then the thumb points in the proper direction for the cross-product vector, upward in the diagram above

Explanation:

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