Respostas

2013-11-09T12:48:44-02:00
Sen x = a
cos x = b
tg²x = (a²/b²)
4tgx = 4(a/b)
tg²x + 4tgx = (a²/b²) / 4(a/b) = a²/b² . 4b/4a = 4a²b/4ab² = a/b = senx/cosx
senx/cosx = \/3
tg x = \/3
tg²x = (\/3)² =3
4tgx = 4\/3

= 3+4\/3
1 3 1