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Math Help - Find the angle between the vectors

  1. #1
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    Find the angle between the vectors

    Find the angle between the vectors <2,-4> and <-6,-1>. Round to the nearest whole degree.

    Do i use the dot product to fnd the angle? And my classmate got 107 degrees as an answer and I wanted to see if he was correct or not, thanks!
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: Find the angle between the vectors

    Yes, you should have a component form and a trigonometric form for the dot product which will allow you to solve for the angle. To the nearest degree, your classmate is correct.
    Thanks from boltage619
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  3. #3
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    Re: Find the angle between the vectors

    Thanks! Im using the formula right now, cos theta = a*b/|a|*|b|
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