Question

usando a tabela de ângulos notáveis determine o valor de X

Answer 1

a-

sen30° = x/h

1/2 = x/15
2x = 15
x = 7,5

b- sen45° = x/h


√2/2 = 80/h
h√2 = 160
h = 160/√2
h = 80√2

c- tan60° = x/y

√3 = x/70
x = 70√3

d- tan30° = x/y

√3/3 = x/50
3x = 50√3
x = 50√3/3

e- cos60° = y/h
1/2 = 40/h
h = 80

f- cos45° = y/h

√2/2 = y/90
y = 45√2