Răspunsuri

2014-05-23T17:43:06+03:00
A, b, c - unghiuri
a=90 grade

a+b+c=180
90+b+c=180
b+c=180-90
b+c=90

b=2c
2c+c=90
3c=90
c=90:3
c=30 de grade

b=2*30
b=60 de grade
2014-05-23T20:56:28+03:00

unghil A= x

unghi B= 2x

3x= 180-90

3x=90 | :3

x=30 => Unghiul A= 30 grade

Unghiul B= 90-30=60 de grade