Respostas

2014-06-02T23:49:31-03:00
Para relembrar: 180° = π rad
360° = 2
π rad
Então:
180° ______ 
π rad
150° ______ x rad
x = 150° . 
π/180°
x = 5
π/6 rad

180° ______ 
π rad
300° ______ x rad
x = 300° . 
π/180°
x = 5
π/3 rad

180° ______ 
π rad
330° ______ x rad
x = 330° . 
π/180°
x = 11
π/6 rad

180° ______ 
π rad
2° ________ x rad
x = 2° . 
π/180°
x = 1
π/90 rad