Photos НАЙТИ AC COS C

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Найти ac cos c. АС^2=ab^2+BC^2-2ab*BC*COSB. Ab2 bc2 ac2 2 BC AC cos. La=2bc cos a:2:b+c. 2ab*cos a/2.
АС^2=ab^2+BC^2-2ab*BC*COSB. Ab2 bc2 ac2 2 BC AC cos. La=2bc cos a:2:b+c. 2ab*cos a/2.

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