Mathematics · Trigonometry
एक ज्यामितीय आकृति में, त्रिभुज BAC एक समकोण त्रिभुज है जिसमें A पर समकोण है, और DE, AB पर इस प्रकार लंबवत है कि त्रिभुज BDE, त्रिभुज BAC के समरूप है। यदि tan B = 3 4 , BC = 15, और DA = 4 है, तो DE की लंबाई क्या है?
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सही उत्तर देखें
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