If a+b+c=pie
Cos3acos3b+Cos3bcos3c+Cos3acos3c= 1...
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Mathematics, 07.04.2020 20:32 kkmoney
If a+b+c=pie
Cos3acos3b+Cos3bcos3c+Cos3acos3c= 1
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Answers: 3
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