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What is principal value of cos …

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What is principal value of cos inverse (-1/2)

    • Posted by Md Tauseef Khan 7 years, 4 months ago

    CBSE > Class 12 > Mathematics
    • 4 answers

    Parth Dhimmar 7 years, 4 months ago

    Let ,Cos^-1 1/2= y Therefore cosy = -1/2 Cosy= cos( -60°) By alied angle formula Cosy=cos(180-60) Cosy= cos 120° Y= 120°

    1Thank You

    Md Tauseef Khan 7 years, 4 months ago

    ✔✅

    1Thank You

    Abhinav Baheti 7 years, 4 months ago

    120 degree

    2Thank You

    Pooja Sharma 7 years, 4 months ago

    120°

    3Thank You

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