Photos НАЙДИ COS C

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Найди cos c. C2 a2 b2 2ab cos. A2 b2 c2 2bc cos a. A^2+B^2=C^2. A2 b2 c2 2bc cos BC.
C2 a2 b2 2ab cos. A2 b2 c2 2bc cos a. A^2+B^2=C^2. A2 b2 c2 2bc cos BC.

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