Question

Calcule: a) sen480° b) cos5π/4 c) tg11π/3 d) sem -7π/3

Answer 1

 a) sen480 = $\sqrt{3} /2$ = 0,86
b) cos5 x 3,14/4 = 0,78
c) tg11 x 3,14/3 = 0,20
d) sen -7 x 3,14/3 = -0,12