Question

Atividade
2) complete
a)sen 135°__________
b)cós 90 °__________
c)sen 180°__________
d)sen 120°__________
e)sen 300°_________
f) cós 210°__________

Answer 1

a)sen 135°= sen45 = √2/3

b)cós 90 ° = 0

c)sen 180° = 0

d)sen 120°=sen60 = √3/2

e)sen 300° = -sen60 = -√3/2

f) cós 210°= -cos30 = -√3/2