Use the result of Problem 50 and the results of Problems 56 and 57 in Section 8.3
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Use the result of Problem 50 and the results of Problems 56 and 57 in Section 8.3 to show that
where
The lines that bisect each angle of a triangle meet in a single point O, and the perpendicular distance r from O to each side of the triangle is the same. The circle with center at O and radius r is called the inscribed circle of the triangle (see the figure).
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cot 2 COS C 2 sin 2 SC r A B ...View the full answer
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