Conteúdo principal

Trigonometria

Lição 4: Introdução às identidades trigonométricas da adição de ângulos

Usar as identidades trigonométricas da soma de ângulos

Calcula cosine, left parenthesis, B, A, with, \widehat, on top, C, minus, 60, degrees, right parenthesis.

(Escolha A)
start fraction, 6, divided by, 13, end fraction, minus, start fraction, 5, divided by, 26, end fraction, square root of, 3, end square root
(Escolha B)
start fraction, 5, divided by, 26, end fraction, minus, start fraction, 6, divided by, 13, end fraction, square root of, 3, end square root
(Escolha C)
start fraction, 6, divided by, 13, end fraction, plus, start fraction, 5, divided by, 26, end fraction, square root of, 3, end square root
(Escolha D)
start fraction, 5, divided by, 26, end fraction, plus, start fraction, 6, divided by, 13, end fraction, square root of, 3, end square root

Não sabes?