a/sinA =b/sinB= c/sinC=k----------------1
ABD Δ salakamu
BD/sinα = AB/sin(π- θ)
m/sinα =c/sinθ------------------------------2
ADC Δ salakamu
AC/sinθ = n/sinβ
b/sinθ = n/sinβ----------------------------3
m/n =[csinα/sinθ]
_________
[bsinβ/sinθ]
m/n =csinα / bsinβ
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