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Formule trigonometrice - Math

Formule trigonometrice 2 23. fl fl fltg fi 2 fl fl fl = r 1¡cosfi 1+cosfi 24. tg fi 2 = sinfi 1+cosfi 1¡cosfi sinfi 25. fl fl flctg fi 2 fl fl fl = r 1+cosfi 1¡cosfi 26. ctg fi 2 = sinfi 1¡cosfi 1+cosfi sinfi 27. 1+cosfi = 2cos2 fi

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  Formule, Formule trigonometrice, Trigonometrice

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