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this might be a dumb qquestion but when they dot product it
why dont they like flip it so BA.BC bc the angle is from point B yeah
But they still do AB.CB which is like them facing each other but i was taught the vectors need to face away
the answer u get is still the same but i was just wondering if that is ok to do if they are facing each other
mathematically it works bc BA is just negative AB so it cancels out anyways but like in terms of like working out yk?
(dont mine the solutions idk why they uploaded it upside down )