Question

    If sec A = 2/√3, then what will be the value of sin² A +

    cos² A?
    A 2 Correct Answer Incorrect Answer
    C 1 Correct Answer Incorrect Answer
    D 3/4 Correct Answer Incorrect Answer

    Solution

    sec A = 2/√3
    ⇒ sec A = sec 30°
    ⇒ A = 30°
    ⇒ sin² A + cos² A = 1 (always)

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