Question Number 104877 by  M±th+et+s last updated on 24/Jul/20

  find x

Answered by ajfour last updated on 24/Jul/20

Commented by M±th+et+s last updated on 24/Jul/20

well done sir

Commented byajfour last updated on 24/Jul/20

(π/2)+α+((2π)/5)=π   ⇒  𝛂=(π/(10))  β=(1/2)((π/2)+α)=((3π)/(10))  sin 𝛗=((a/2)/a)    ⇒  𝛗=(π/6)  𝛗+𝛃 = 𝛑−2x  ⇒   x=(𝛑/2)−(𝛃/2)−(𝛗/2)              = 90°−27°−15°        ⇒   x = 48° .