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Old 08-03-2007   #1
Mathman
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Default Trigonometry???

In ΔABC, what is length of the angular bisector of angle A if 'a' is the side opposite to vertex A, 'b' is the side opposite to vertex B and 'c' is the side opposite to vertex C?Please explain the steps clearly.I actually know what an angular bisector is.I want the angular bisector expressed mathematically...i.e. in general terms