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      Question

      If x tan 60° + cos 45° = sec 45° then the value of

      x2 + 1 is
      A 6/7 Correct Answer Incorrect Answer
      B 7/6 Correct Answer Incorrect Answer
      C 5/6 Correct Answer Incorrect Answer
      D 6/5 Correct Answer Incorrect Answer

      Solution

      x tan 60° + cos 45° = sec 45°  x × √3 +1/√2 =√2 √3 x =√2-1/√2 x =1/√6 x2=1/6 x2+1 =1/6+1 =7/6.

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