trigonometry!!! please help me guys!!!

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For a parameter a, suppose u is the smallest positive real number such that 100cos^2u−100sin^2u=a+25 and v is the largest negative real number such that 25√3sinv−75cosv=a. For how many integer values of a is u+v non-negative?

  • trigonometry!!! please help me guys!!! -

    16

  • trigonometry!!! please help me guys!!! -

    wrong

  • trigonometry!!! please help me guys!!! -

    36

  • trigonometry!!! please help me guys!!! -

    wrong

  • trigonometry!!! please help me guys!!! -

    13

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