Question

Tolong kasik tau cara no 14 ya pkek cara
makasih

Answer 1

X = r cos α
x = 4 cos 135°
x = 4.(-1/2√2)
x = -2√2

y = r sin α
y = 4 sin 135°
y = 4.1/2√2
y = 2√2

Koordinat cartesius (-2√2,2√2)

Jawaban: D