A+B+C=360degree cotA/4+cotB/4+cotC/4= kcotA/4cotB/4cotC/4 then k=
Priyanshu priyadarshi , 7 Years ago
Grade 9
Trigonometry> A+B+C=360degree cotA/4+cotB/4+cotC/4= kco...
1 Answers
sai sandeep
when A+B+C=90 or 360
A+B+C=90
A+B=90-C
cot(A+B)=Cot(90-C)
cotAcotB-1=cotA+cotB/cotC
cotAcotBcotC-cotC=cotA+cotB
cotA+cotB+cotC=cotAcotBcotC
cotA+cotB+cotC=cotAcotBcotC
cotA/4+cotB/4+cotC/4=kcotA/4cotB/4cotC/4
k=1
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