Respostas

2014-03-11T09:58:23-03:00
Sen =>   30 = 1/5                         45 = raiz de 2/ 2       60  = raiz de 3 /2
cos=>    30 = raiz de 3 /2            45 = raiz de 2 /2         60 = 1/2
tg =>     30 = raiz de 3/3              45= 1                          60 = raiz de 3
9 3 9