jawab please kakak,,, nomor 11

Kelas 7 Matematika
Bab Derajat

163° 48' = (163 . 60') + 48'
163° 48' = 9.780' + 48'
163° 48' = 9.828'

a = 9.828'

2a/3 - a/2
= (2a . 2 - 3a)/(2 . 3)
= (4a - 3a)/6
= a/6
= 9.828'/6
= 1.638'
= (1.638 : 60)°
= 27,3° 
= 27° + 0,3 . 60'
= 27° 18'

Jawabannya C