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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=?

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=?

Grade:11

1 Answers

ABHISHAY TURNER
26 Points
6 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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