Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 month ago

Find the direction cosines and angles of u and show that cos^2 𝛼 + cos^2 𝛽 + cos^2 𝛾 = 1.  u= i + 8j + 4k?

I got 83.6, 63.6 & 27.3 for the direction cosines (respectively) and they were all wrong :( please help! 

1 Answer

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  • rotchm
    Lv 7
    1 month ago

    Show us how you got those values.

    Then, unanon yourself. It's very impolite to be anonymous here. You should know that. Then, we will take it from there. 

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