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    Maths-
    General
    Easy

    Question

    cos space theta equals 1 half open parentheses a plus 1 over a close parentheses text  then  end text cos text end text 3 theta equals K open parentheses a cubed plus 1 over a cubed close parentheses where  is equal to

    1. 1/2
    2. negative 1 half
    3. 1
    4. 3/2

    The correct answer is: 1/2

      Cubing on both sides and applyc o s space 3 A equals 3 c o s space A minus 4 c o s cubed space A

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