kyliecanavan123 kyliecanavan123
  • 13-04-2018
  • Mathematics
contestada

solve for bc
A) 12
B) 10
C) 8
D) 6

solve for bc A 12 B 10 C 8 D 6 class=

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kkaasshh
kkaasshh kkaasshh
  • 13-04-2018
I believe the answer to this is 12.
Answer Link
erato erato
  • 04-03-2019

Answer: A) 12

Step-by-step explanation: As ∠EGF,∠ADF  and ∠BCF are equal let it be equal to β

So, tanβ=[tex]\frac{perpendicular}{base}[/tex]

tanβ=[tex]\frac{EF}{EG}[/tex] for triangle FEG

and tanβ=[tex]\frac{BF}{BC}[/tex] for triangle FBC

and by using above two equations,we get

[tex]\frac{EF}{EG}[/tex]=[tex]\frac{BF}{BC}[/tex]

i.e. 6/4=18/BC

hence, BC=12

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