Question

ayudenme porfavor en trigonometría​

Answer 1

Respuesta:

ctg Ф = 7/5

Explicación paso a paso:

tan 45° = (2x+1)/(x+3)

1 = (2x+1)/(x+3)

1 . (x+3) = 2x+1

x + 3 = 2x + 1

3 - 1 = 2x - x

2 = x

ctg Ф = (5x-3)/(x+3)

ctg Ф = (5.2-3)/(2+3)

ctg Ф = (10-3)/5

ctg Ф = 7/5