Respostas

  • Usuário do Brainly
2014-07-04T18:08:14-03:00
A)
Cos270 +sen270+tg225
-cos90 -sen90+tg45
0  -1 + 1 =0

b)
Log3 3V48
Log3 3 + Log3 V48
1 + 1/2.Log3 48
1 + 1/2Log3 2^4.3
1 + 1/2Log3 2 ^4 + 1/2Log3 3
1+ 1/2 + 2Log 3 2
3/2 + 2.x