mohon bantuan nya ya kakak kakak manis

maaf kalau salah :)
maaf kalau tulisan jelek hehehehehehehheheheehhehehehehehehehehhe

a) sudut BOC =...?
sdtBOC+sdtDOC+sdtDOE=180*
(2x+11) + 90* + (4x-29) = 180
2x+4x+11+90-29 = 180
6x = 180-11-90+29
6x = 108
x = 108/6
x = 18
Maka,sdt.BOC
= 2x+11
= 2 (18) + 11
= 47*

b) sudut AOB =...?
sdtAOB = sdtDOE
=> 4x-29
=> 4 (18) - 29
=> 43*

c) sudut AOE = ...?
=> 180* - sdtDOE
=> 180* - 43*
=> 137*