Kak minta tolong dong di jawab

Posted on

Kak minta tolong dong di jawab

Kak minta tolong dong di jawab

Dik :
x = 16
y = 12

Dit :
a. r
b. sin α
c. cos α
d. tan α
e. cosec α
f. sec α
g. cot α

Jawab :
a. Menggunakan phytagoras
r = √[(12)^2 + (16)^2]
r = √(144) + (256)]
r = √[400]
r = 20

b. sin α = y/r
sin α = 12/20 = 3/5

c. cos α = x/r
cos α = 16/20 = 4/5

d. tan α = y/x
tan α = 12/16 = 3/4

e. cosec α = 1/sin α
cosec α = 1/(3/5) = 5/3

f. sec α = 1/cos α
sec α = 1/(4/5) = 5/4

g. cot α = 1/tan α
cot α = 1/(3/4) = 4/3