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Math Help - Determine all the possible value of x where 0 deg <= x <= 360 deg.

  1. #1
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    Question Determine all the possible value of x where 0 deg <= x <= 360 deg.

    How to solve this question?

    cos x cos 200 + sin x sin 200 = square root 3/2.
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: Determine all the possible value of x where 0 deg <= x <= 360 deg.

    Hint: Consider using the angle sum/difference identity for cosine...
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    Re: Determine all the possible value of x where 0 deg <= x <= 360 deg.

    COS(x-20)=square root 3/2

    then easy...
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  4. #4
    MHF Contributor MarkFL's Avatar
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    Re: Determine all the possible value of x where 0 deg <= x <= 360 deg.

    Quote Originally Posted by MINOANMAN View Post
    COS(x-20)=square root 3/2

    then easy...
    You have robbed the OP of the chance to find that on their own...it is good forum etiquette NOT to come along behind someone who has offered a suggestion and essentially solve the problem.
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