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Babynini

  • one year ago

Help with vectors :)

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  1. Babynini
    • one year ago
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    how do i find an angle between u and v in degrees?

  2. myininaya
    • one year ago
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    \[\cos(\theta)=\frac{u \cdot v}{|u| \cdot |v|}\]

  3. myininaya
    • one year ago
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    where theta is the angle you are looking for

  4. Babynini
    • one year ago
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    Thank you!

  5. Babynini
    • one year ago
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    So can you check this really quick? u = <-1,-2> v=4i+3j ---- calculations ---- theta = 153.43

  6. Babynini
    • one year ago
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    @myininaya :)

  7. myininaya
    • one year ago
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    so you did you dot product and your magnitudes?

  8. myininaya
    • one year ago
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    yep just did the calculations that seems to be right

  9. Babynini
    • one year ago
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    Yep! fantastic. thanks :)

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