Vectors | Revision Server | Page 1

gentle vector May 27, 2024, 8:34 AM

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surely graphically its the same angle

pastel remnant May 27, 2024, 8:49 AM

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it does give the same angle

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not sure whats going on in the last step of your calculation

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sin-1(4/4root5) = 26.6

gentle vector May 27, 2024, 9:13 AM

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why have u used sin

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the dot product uses cos

pastel remnant May 27, 2024, 9:13 AM

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yeah but you havent done dot product

gentle vector May 27, 2024, 9:14 AM

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in the second part i have

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the first part ive just found the angle using tan inverse

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pastel remnant May 27, 2024, 9:17 AM

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yeah so that would give you 63.4

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where did you get 24.1

pastel remnant May 27, 2024, 9:18 AM

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which is the same as if you were to do angle between positive x using cosx = (1/root5)

pastel remnant May 27, 2024, 9:19 AM

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yeah im blind

gentle vector May 27, 2024, 9:19 AM

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thanks i see my error now

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