Pakai cara yaaa :)))))))(
<DAC = 4x - 18⁰, <CAB = 6x - 22⁰
<DAC + <CAB = 90⁰
4x - 18⁰ + 6x - 22⁰ = 90⁰
10x - 40⁰ = 90⁰
10x = 90⁰ + 40
10x = 130
x = 13
<CAB = 6x - 22
= 6.13 - 22
= 78 - 22 = 56⁰
<ABE = 2x - 14, <EBD = 90⁰, <DBC = x + 18
<ABE + <EBD + <DBC = 180⁰
2x - 14 + 90⁰ + x + 18 = 180⁰
3x + 94 = 180
3x = 180⁰ - 94
3x = 86⁰
x = 28,66⁰
<DBC = x + 18 = 28,66 + 18 = 46,66⁰
<CBE = <DBC + <EBD
= 46,66⁰ + 90⁰ = 136,66⁰
