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if tab A = n tan …

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if tab A = n tan B and sinA =m sin B prove that cos ^ 2 A = m^2-1 /n^2-1

    • Posted by Saki D 6 years, 6 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Bajarang Baali Baba Ki Jai 6 years, 6 months ago

    ISKA ANSWER S.M. AYEGA

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