Question

Considere o triângulo retangulo representado abaixo e dertermine:

Answer 1

a)
sen x = catoposto / hipotenusa
senx = 8/10 = 4/5
sen x = 4/5
b)
cosx = catadjacente / hipotenusa
cosx = 6/10 = 3/5
cos x = 3/5
c)
tgx = catoposto / catadjacente
tgx = 8/6 = 4/3
tg x 4/3
d)
sen b = 6/10 = 3/5
sen b = 3/5
e)
cos b = 8/10 = 4/5
cos b = 4/5
f)
tg b = 6/8 = 3/4
tg b = 3/4
g)
sen x ^2 + cos x ^2
4/5 ^2 + 3/5 ^2
16/25 + 9/25 = 25 / 25 = 1
h)
sen b ^2 + cos b ^2
3/5 ^2 + 4/5 ^2
9/25 + 16/25 = 25/25 = 1