Contenido principal

Precálculo

Identidades de suma de ángulos

Usar las identidades trigonométricas de suma de ángulos

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

Escoge 1 respuesta:

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

¿Atorado?