Question

AYUDA OTRA VEZ
ES TRIGONOMETRIA

befaa8dee9fa43c0ad95de97bc2195fe.docx

Answer 1

5x+7x+17=180

12x+72=180

12x=108

x=9

Answer 2

Hola!

Respuesta:

Alternativa A

Explicación paso a paso:

$(5x)°+ (7x)° + \frac{2 \pi}{5} \: rad= 180° \\ (5x)°+ (7x)° + \frac{2 \pi}{5} \: rad \times \frac{180°}{\pi \: rad} = 180° \\ (5x)°+ (7x)° + \frac{2 \times 180}{5} \: rad= 180° \\ (5x)°+ (7x)° + \frac{360°}{5} = 180° \\ (5x)°+ (7x)° + 72° = 180° \\ (12x)° = 180° - 72° \\ (12x)° = 108° \\ 12x = 108 \\ x = \frac{108}{12} \\ x = 9$