Question

Tolong dijawab mau dikumpul

Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

5

x = 8 cos 330 = 8. 1/2√3 = 4√3

y = 8 sin 330 = 8.(-1/2) = -4

(4√3,-4)

7.

tan α = 5√3/5 =√3

α = 60°

r =√(x²+y²) = √(5²+(5√3)² =√(25 +75) =√100 = 10

koordinat (10,60°)

8.

tan α = -4/4√3 = -√3/3 kuadran IV

α = 330°

r =√(x²+y²) = √(4√3²+(-4)²=√(48+16)=√64 = 8

koordinat kutub (8, 330°)

9.

tan α = -5/-5= 1 kuadran III

α = 315°

r =√(x²+y²) =√(-5)²+(-5)² =√50 = 5√2

koordinat (5√2, 315°)