franky2727
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i get that a unit vector is U/modU but how would it be written for example 8i-4j-8k would it be simply (8i-4j-8k)/144?
Writing Unit Vectors: A Quick Guide for Scientists
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Notation for the normalized vector [itex]\vec u[/itex] is also [itex]\hat u[/itex]. Note, that it is [itex]\vec u / ||\vec u||[/itex] and not [itex]\vec u / || \vec u ||^2[/itex].
franky2727
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ah sorry i ment over root 144 . apart from that is the way i wrote it fine or would i have to split it into I J and K parts?
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It doesn't matter;
(8i-4j-8k)/12 = (8/12) i - (4/12) j - (8/12) k.
(8i-4j-8k)/12 = (8/12) i - (4/12) j - (8/12) k.
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Or even better (2/3)i- (1/3)j- (2/3)kCompuChip said:
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HallsofIvy said:Or even better (2/3)i- (1/3)j- (2/3)k
Which is then again equivalent to
(2i - j - 2k) / 3
or
2(i - 1/2 j - k) / 3
Take your pick (or make your own :D)