nomor 15 gimana yaa:( maaf kebalik hehe

AOC = 6x + 4
BOC = 5x + 9
Dit. Penyiku AOC --> BOC

Jumlah kdua sudut 90 drjt
90 = (6x + 4) + (5x + 9)
90 = 11x + 13
90 - 13 = 11x
77 = 11x
x = 77/11 = 7

BOC = 5x + 9
= 5(7) + 9
= 35 + 9
= 44 drjt(b.)