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    Question

    2 × Tan 30° / (1 + Tan2 30°)

    equals: 
    A Sin 60° Correct Answer Incorrect Answer
    B Cos 60° Correct Answer Incorrect Answer
    C Tan 60° Correct Answer Incorrect Answer
    D Sin 30° Correct Answer Incorrect Answer

    Solution

    2 × Tan 30° / (1 + Tan2 30°) = 2 x (1/√3)/(1 + (1/√3)2) = 2 x (1/√3)/(1 + (1/3)) = √3/2 = sin 60°

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