Mathematics · Properties of Triangles

त्रिभुज ABC में, यदि भुजाओं की लंबाई a = 13, b = 8, और c = 7 है, तो cos(B + C) किसके बराबर है?

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त्रिभुज ABC में, यदि भुजाओं की लंबाई a = 13, b = 8, और c = 7 है, तो cos(B + C) किसके बराबर है?

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त्रिभुज ABC में, यदि भुजाओं की लंबाई a = 13, b = 8, और c = 7 है, तो cos(B + C) किसके बराबर है?

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