Tolong kerjakan soal yang ada di gambar

A. 180 = 30 + 5a
180 – 30 = 5a
150 = 5a
30 = a

b. <RQS = 5a
= 5* 30
= 150

30° + 5a = 180°
5a = 150°
a = 30°

Besar ∠RQS = 30° x 5 = 150°