Question

Calcule a) sen π/6 b) cos 120° c) tg π/4

Answer 1

a) 1/2
Resolucao:
sen 180/6 (simplifica)
sen 30°
sen 1/2
b) -1/2
Resolucao:
cos 120
cos 180 - 120
cos - 60
cos - 1/2
c)√3
Resolucao:
tg 180/4 (simplifica)
tg 45
tg √3