Question

4) Calcule o valor de X, sabendo que os ângulos são complementares :
a) 2x + x – 15° = 90°
b) x + x + 18° = 90°
c) x + 10° = 90°
7d) x + 60° = 90°

Answer 1

Resposta:

A)

$2x + x - 15 = 90 \\ 3x = 90 + 15 \\ 3x =105 \\ x = \frac{105}{3} \\ x = 35$

B)

$x + x + 18 = 90 \\ 2x = 90 - 18 \\ 2x = 72 \\ x = \frac{72}{2} \\ x = 36$

C)

$x + 10 = 90 \\ x = 90 + 10 \\ x = 100 \\ x = \frac{100}{1} \\ x = 100$

D)

$x + 60 = 90 \\ x = 90 + 60 \\ x = 150 \\ x = \frac{150}{1} \\ x = 150$