Images B C 2 РЕШЕНИЕ

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B c 2 решение. Ab2 bc2 ac2 2 BC AC cos. Ab AC cosa. АС^2=ab^2+BC^2-2ab*BC*COSB. Ac2=ab2+b2-2ab*BC*COSB.
Ab2 bc2 ac2 2 BC AC cos. Ab AC cosa. АС^2=ab^2+BC^2-2ab*BC*COSB. Ac2=ab2+b2-2ab*BC*COSB.

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