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Please help me solve this, random answers will be removed
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34 votes
Please help me solve this, random answers will be removed

Please help me solve this, random answers will be removed-example-1
User Wannes
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16 votes
16 votes

Answer:

Explanation:

User Abe Miessler
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16 votes
16 votes


ac {}^(2) = cb {}^(2) + ba {}^(2) - 2(cb)( ba)(cos \alpha ) \\ ac {}^(2) = 21 {}^(2) + 26 {}^(2) - 2(21)(26)(cos112) \\ ac {}^(2) = 441 + 676 - 1092(cos112) \\ ac {}^(2) = 1526.07 \\ ac = 39.065

User Zigu
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