7. Calcule "a + b", si:
sen(35° + a) = cos 12° + b
A) 11° B) 32° C) 43° D) 33° E) 23°
sen(35° + a) = cos 12° + b
A) 11° B) 32° C) 43° D) 33° E) 23°
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Respuesta:
C) 43°
Explicación paso a paso:
sen(35° + a) = cos(12° + b)
35° + a + 12° + b = 90°
47° + a + b = 90°
a + b = 43°