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In Triangle ABC, A:B:C =1:2:4, then TanA x TanB +TanB x TanC + TanC x TanA =
ans is (-7.0044)
given A+B+C=180 A:B:C=1:2:4 SO B=2A , C=4A ?
# A+2A+4A=180
#7A=180
#A=25.71 DEGREES B=2A=51.43 C=4A=102.85
THEN SUBSTITUTE THIS VALUES IN THE GIVEN EQUATIONS.
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