If A, B, and C are the angles of ΔABC, show that cot(B+C2) = tan(A2).


Answer:


Step by Step Explanation:
  1. We know that the sum of the angles of a triangle is 180.
  2. Thus, cot \bigg(\dfrac { B + C } { 2 }\bigg) = tan \dfrac { A } { 2 }.

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