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(a) DAB = 180o - 98o = 82o
DCB = 180o - 82o = 98o
CBD = 180o - (98 + 45)o
= 180o - 143o = 37o
(b) ADB = 180o - (68 + 45)o
= 180o - 113o = 67o
= 180o - 149o = 31o
johnmulu answered the question on June 9, 2017 at 11:42
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