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      Question

      (cos5°+sin5°)/(cos5°-sin5°) is equal

      to:
      A tan5Β° Correct Answer Incorrect Answer
      B cot5Β° Correct Answer Incorrect Answer
      C tan50Β° Correct Answer Incorrect Answer
      D tan40Β° Correct Answer Incorrect Answer

      Solution

      (cos5°+sin5°)/(cos5°-sin5°) Divide the numerator and denominator by cos5° (1+tan5°)/(1-tan5°) (tan⁑〖45°γ€— + tan5°)/(1-tan45° ×tan⁑〖5°γ€— ) tan (A + B) = (tanA°+tanB°)/(1-tanA°+tanB°) tan (45 + 5) = tan 50

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