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Math Help - Trigonometric equation for x and y

  1. #1
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    Trigonometric equation for x and y

    Solve for x,y: \left(\sin(x-y)+1\right)\left(2\cos(2x-y)+1\right)=6.
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  2. #2
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    Quote Originally Posted by james_bond View Post
    Solve for x,y: \left(\sin(x-y)+1\right)\left(2\cos(2x-y)+1\right)=6.
    You just have to remember that

    -1 \leq \sin \alpha \leq 1 and -1 \leq \cos \alpha \leq 1 for every \alpha real
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  3. #3
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    It just seemed too difficult but yeah thanks (again).
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