Question

    Find the simplified value of the following expression if

    a = 30o [(sin2a + cos2a} ÷ seca × sina ÷ cosa]
    A 1 Correct Answer Incorrect Answer
    B 2 Correct Answer Incorrect Answer
    C 1/2 Correct Answer Incorrect Answer
    D 3/2 Correct Answer Incorrect Answer

    Solution

    [(sin2a + cos2a} ÷ seca × sina ÷ cosa] = (1/seca) × (sina/cosa) = cosa × (sina/cosa) = sina = sin30o = (1/2)

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