Question

A + b + c equal to 180 degree then prove that tan a + tan b + 10 c equal to 10 into 10 b into 10c

Answer 1

A+B+C=180
Tan(A+B+C)=Tan A+Tan B+Tan C- TanA. TanB. TanC
.............................................................
1-TanA TanB-TanBTan C-TanCTanA
0=TanA+TanB+TanC-TanA. TanB. TanC
TanA+TanB+TanC=TanA. TanB. TanC

Answer 2

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