MathDB
Trig Computation

Source:

December 19, 2005

Problem Statement

Find the value of 10cot⁡(cot⁡−13+cot⁡−17+cot⁡−113+cot⁡−121)10\cot(\cot^{-1}3+\cot^{-1}7+\cot^{-1}13+\cot^{-1}21).
Back to ProblemsView on AoPS