ION 7 In the diagram, AABC is drawn. AD is drawn such that AD 1 BC. B A D C 7.1.1 Use the diagram above to determine AD in terms of sin B 7.1.2 Hence, prove that the area of AABC = (BC)(AB)sin  In the diagram, points B, C ADB ACB=α, CDB = = 2 and D lie in the same horizontal plane. and DC = k units. BD=BC.
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