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trigonometry

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It is given that sin(θ)=15√. In addition, a and b are coprime positive integers such that cos(2θ)=ab. What is the value of a+b?

  • trigonometry - ,

    Your statement sin(ƒÆ)=15ã
    doesn't make sense.

  • trigonometry - ,

    ^Yeah theta has to be in degrees, or radians. Sq rt of 15 can't be right

  • trigonometry - ,

    If you are trying to write sqrt(15), write it as ã15, not 15ã.

    A sine can not exceed 1, buy the way

  • trigonometry - ,

    may this be correct question
    It is given that sin(θ)=1/√5. In addition, a and b are coprime positive integers such that cos(2θ)=a/b. What is the value of a+b?

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