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nickymarden

  • 4 years ago

A vector v forms with axis 0x and 0y the angles alpha=120º and beta=45º. What angle does v make with 0z? i know the answer is gama=45º, but how do i get there?

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  1. nickymarden
    • 4 years ago
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    is anyone gonna answer this? i really need it.

  2. dumbcow
    • 4 years ago
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    having little trouble working it out...hold on

  3. nickymarden
    • 4 years ago
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    ok :)

  4. nickymarden
    • 4 years ago
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    just leave it, thanks for the time.. :)

  5. nickymarden
    • 4 years ago
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    fooound it. cos^2alpha+cos^2beta+co^2gama=1

  6. eliassaab
    • 4 years ago
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    \[\cos^2(\gamma) =1 - \cos^2(\alpha) - \cos^2(\beta) =\\ 1- \frac 1 4 - \frac 1 2=\frac 14\\ \beta = 30 \]

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