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    Question

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

    to:
    A tan5ยฐ Correct Answer Incorrect Answer
    B cot5ยฐ Correct Answer Incorrect Answer
    C tan50ยฐ Correct Answer Incorrect Answer
    D tan40ยฐ Correct Answer Incorrect Answer

    Solution

    (cos5°+sin5°)/(cos5°-sin5°) Divide the numerator and denominator by cos5° (1+tan5°)/(1-tan5°) (tanโกใ€–45°ใ€— + tan5°)/(1-tan45° ×tanโกใ€–5°ใ€— ) tan (A + B) = (tanA°+tanB°)/(1-tanA°+tanB°) tan (45 + 5) = tan 50

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