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In-a-ABC-a-cot-A-b-cot-B-c-cot-C-




Question Number 25985 by Vignesh vkj last updated on 17/Dec/17
In a △ABC, a cot A+ b cot B+c cot C =
InaABC,acotA+bcotB+ccotC=
Answered by ajfour last updated on 17/Dec/17
Σacot A =Σ(√(4R^2 −a^2 ))  R is the circumradius .
ΣacotA=Σ4R2a2Risthecircumradius.

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