Question

ayuda porfavor ,es de trigonometría​

Answer 1

RESOLUCIÓN:

$2x + 1 = x + 3 \\ 2x - x = 3 - 1 \\ x = 2$

$ctgΘ = \frac{5x - 3}{x + 3} \\ ctgΘ = \frac{5(2) - 3}{2 - 3} \\ ctgΘ = \frac{3}{ - 1} \\ ctgΘ = - 3$