New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    If cos 2θ = 3/4, find the value of sin²

    θ.
    A 1/8 Correct Answer Incorrect Answer
    B 1/4 Correct Answer Incorrect Answer
    C 1/2 Correct Answer Incorrect Answer
    D 3/8 Correct Answer Incorrect Answer

    Solution

    We know cos 2θ = 1 - 2sin² θ. Given cos 2θ = 3/4, substituting: 3/4 = 1 - 2sin² θ. Thus, 2sin² θ = 1 - 3/4 = 1/4, so sin² θ = 1/8.

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