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    Maths-
    General
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    text  If  end text cos space A equals 5 over 13 comma tan space B equals fraction numerator negative 15 over denominator 8 end fraction comma negative 270 to the power of ring operator less than straight A less than 360 to the power of ring operator comma 90 to the power of ring operator less than straight B less than 180 to the power of ring operator, then the quadrant to which A+B belongs is

    1. IV
    2. III
    3. II
    4. I

    The correct answer is: II

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    In a triangle A B C comma fraction numerator t a n invisible function application B over denominator t a n invisible function application C end fraction equals 2 over 3 and t a n invisible function application A t a n invisible function application B t a n invisible function application C equals 6 then the value(s) satisfy the equation

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    text  If  end text 0 less than theta less than pi over 2 text  and  end text 2 sin invisible function application theta equals square root of 3 cos space 10 to the power of ring operator plus sin space 10 to the power of ring operator text  then  end text theta equals

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    in a triangle P Q R 3 sin space P plus 4 cos space Q equals 6 and 4 sin space Q plus 3 cos p=1 then

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