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    Maths-
    General
    Easy

    Question

    text  If  end text alpha plus beta plus gamma equals pi over 2 text  and  end text cot invisible function application alpha comma cot invisible function application beta comma cot invisible function application gamma text  are in  end text straight A stack P with _ below with _ below text  then  end text cot invisible function application alpha times cot invisible function application gamma equals

    1. 1
    2. 2
    3. 3
    4. 4

    The correct answer is: 3

      cot invisible function application alpha comma cot invisible function application beta comma cot invisible function application gamma text  are in A.P.  end text
      not stretchy rightwards double arrow 2 cot invisible function application beta equals cot invisible function application alpha plus cot invisible function application gamma
      text  since  end text alpha plus beta plus gamma equals pi divided by 2 not stretchy rightwards double arrow sum cot invisible function application alpha equals straight capital pi cot invisible function application alpha
      not stretchy rightwards double arrow cot invisible function application alpha plus cot invisible function application beta plus cot invisible function application gamma equals cot invisible function application alpha cot invisible function application beta cot invisible function application gamma
      not stretchy rightwards double arrow 3 cot invisible function application beta equals cot invisible function application alpha cot invisible function application beta cot invisible function application gamma

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