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Prove that: Sin20° Sin40° Sin80° = …

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Prove that: Sin20° Sin40° Sin80° = 3/16

    • Posted by Harshita Seth 5 years, 9 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Aditya Kumar 5 years, 9 months ago

    so simple sina.sin(60-a).sin(60+a)= 1/4 sin3a apply and solve

    1Thank You

    ANSWER
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