Conţinutul principal

Recapitulare pentru BAC

Ecuații trigonometrice

Folosirea formulelor trigonometrice pentru sume de unghiuri

Calculează cosine, left parenthesis, angle, B, A, C, minus, 60, degrees, right parenthesis.

Alege un răspuns:

start fraction, 6, divided by, 13, end fraction, minus, start fraction, 5, divided by, 26, end fraction, square root of, 3, end square root
start fraction, 5, divided by, 26, end fraction, minus, start fraction, 6, divided by, 13, end fraction, square root of, 3, end square root
start fraction, 6, divided by, 13, end fraction, plus, start fraction, 5, divided by, 26, end fraction, square root of, 3, end square root
start fraction, 5, divided by, 26, end fraction, plus, start fraction, 6, divided by, 13, end fraction, square root of, 3, end square root

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