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In triangle ABC ,right angled at …

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In triangle ABC ,right angled at b ,if tan A 4/4 then the value of cosC is

    • Posted by D Chandini 3 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Priya Soni 3 years, 10 months ago

    Given that: In ∆ABC, angle b=90° And tan A =4/4=P/B. Find: Cos C=? By using Pythagoras theorem. AC²=AB²+BC² AC²=(4)²+(4)² AC²=16+16 AC²=32 AC²=√32 AC²=⁴√2. Now we find the value of Cos C= B/H= 4/⁴√2= 1/√2. Done??

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