Question

RESOLUCION POR FAVOR
1- Si: Tg x . Ctg (40° – x) = 1. Calcular x.


2-Sabiendo que: Tg (2x + y). Ctg 40° = 1 Sen (x – y) = Cos 70° Calcular: 2x – 5y.

Answer 1

Explicación paso a paso:

1.

x = 40° - x

x + x = 40°

2x = 40°

x= 40°/2

x= 20°