Respostas

2013-12-05T21:09:17-02:00
|\
|   \  
|     \
|15   \
|         \
|           \
|____(60°
      x


Tg60° = 15 / x
√3 = 15 / x
1,7 = 15 / x
1,7x = 15
x = 15 / 1,7
x = 8,82m