Mathematics · Geometry
त्रिभुज DEF में, कोण D का समद्विभाजक (bisector) भुजा EF को बिंदु N पर काटता है। यदि DE = 36 सेमी, DF = 40 सेमी और EF = 38 सेमी है, तो NF की लंबाई (सेमी में) क्या है?
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