xydler xydler
  • 22-03-2019
  • Mathematics
contestada

Are we supposed to be using sin? Actually, how do you even go about solving this problem?

Are we supposed to be using sin Actually how do you even go about solving this problem class=

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marco417chan marco417chan
  • 22-03-2019

Answer:

Step-by-step explanation:

let the distance between the center of small circle and the angle be x

[tex]\frac{2}{x}[/tex]=[tex]\frac{4}{x+2+4}[/tex]

                    2x+12=4x

                            x=6

∴sin([tex]\frac{\alpha }{2}[/tex])=[tex]\frac{2}{6}[/tex]

        [tex]\frac{\alpha }{2}[/tex]=19.47122063

                                               α=38.94244127

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