Respostas

2013-11-05T11:34:50-02:00
A) sen x = cos x = 2/2\/2 = 1/\/2 = \/2/2 --> catetos iguais --> tg x = 1
b) sen x = cos x = 3/3\/2 = 1/\/2 = \/2/2 --> catetos iguais --> tg x = 1