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How can I find the angle between the 3d vector & x-axis ?

  1. Oct 10, 2008 #1
    Hello :- My name is Anas I'm a new member in this forum .

    I have a small question

    what is the angle between the vector 3i +j-4k and the x-axis ?

    and please explain me what is the method of answer this question

    Im sorry , I know I have many mistakes in this topic because my English language is poor

    Thank you , and I wish from you to answer me very fast
     
  2. jcsd
  3. Oct 10, 2008 #2

    Integral

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    Tell us what you know about the Dot product of 2 vectors.
     
  4. Oct 10, 2008 #3
    I Didnt know about this
    Im sorry
     
  5. Oct 10, 2008 #4

    Integral

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