Bantu bang semua tolong

1/2ㅠ rad = 1/2 × 180 = 90 drajat
3/4ㅠ rad = 3/4 × 180 = 135 drajay
3/2ㅠ rad = 3/2 × 180 = 270 drajat .
phi nya dganti aja pake 180 trus dikali