Question

Tolong pake cara kawan sama minta rumusnya

Answer 1

(90-50)/(90-0)( pecahan )=(200-y)/(200-20)( pecahan )
= 40/90=(200-y)/180
= 40/1=(200-y)/2
=200-y=80
= -y = -120
y = 120
A. 120° Y