Respostas

2014-04-03T19:10:22-03:00
Sen 60= 12 raiz 3/a
raiz 3/2= 12 raiz 3/a      multiplica em cruz
2 . 12 raiz 3 = raiz 3 . a
24 raiz 3 = raiz 3 . a 
a= 24 raiz 3/ raiz 3
a= 24


tg 60 = 12 raiz 3/ b
raiz 3= 12 raiz 3/ b
b= 12 raiz 3 /raiz 3
b= 12