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    can anyone help me with part b as I don't know how to start to find the angle in order to find the arc length
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    (Original post by please.help.me)
    can anyone help me with part b as I don't know how to start to find the angle in order to find the arc length
    You know EAF and AEP (/ AFP), so calculate EPF, and hence the length of the arc EF.
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    Hint: What is EPA? EPC?
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    sine rule, followed by vertically opposites & angles in a triangle leads to angle EPC, which is half of EPF, hence easy then to find arc length.
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    so i think you use tan so 18.4 divide it by 45 degree which is 22.0 and then you do 22 over 360 times 58 pie which is 11.0
 
 
 
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