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Flag Trigonometry> i cnt’t solve this trigo. problem..... pl...
question mark

i cnt’t solve this trigo. problem.....
please give me hints to solve it....
A+B+C=180
tanA+ tanB+ tanC=0
cotA+cotB+cotC=?

Ritha , 7 Years ago
Grade 11
anser 1 Answers
ABHISHAY TURNER

Last Activity: 7 Years ago

Given- A+B+C=180=>A+B=180 – CMULTIPLYING COT ON BOTH SIDES=>COT(A+B)=COT(180-C) =>COT(A+B)= ––––––( 1 ) =>COT(A+B)= 1 – COT C => – COT C = 1 – COT C HENCE,COT A+ COT B+ COT C=1

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