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      Question

      Maximum value of f(x) = 3 cos x + 4 sin x  is:

      A √7 Correct Answer Incorrect Answer
      B 4 Correct Answer Incorrect Answer
      C 7 Correct Answer Incorrect Answer
      D 5 Correct Answer Incorrect Answer

      Solution

      We are given the function: f(x) = 3 cos x + 4 sin x We are to find its maximum value . Using identity:

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