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CBD = 110 derajat
ABC = 180-110 = 70 derajat
Segitiga = 180 derajat
ACB+BAC = 180-ABC
ACB+BAC = 180-70 = 110
ACB dan BAC sama sehingga 110/2 = 55
Jadi, BAC = 55 derajat, ACb = 55 derajat
5. -
Maaf cuma tahu yg no.4