Prove that cotB cotC + cotC cotA + cotA cotB = 1

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cotB cotC + cotC cotA +cotA cotB=1
if a+b+c=180 then cota+cotb+cotc
cotb cotc cotc cota cota cotb
cota + cotb+cotc formula
cota-cotb formula
cota+cotb+cotc=√3
if a+b+c=180 then cota/2+cotb/2+cotc/2
if a+b+c=π then cotb cota
let abc be a triangle such that cota + cotb
#trigonometry #class10th #mathematics
  1. Pace Edu.
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