Expression 3: cosine to the negative 1st power StartFraction, 2 times 6 squared minus "E" squared Over 2 times 6 squared , EndFraction equals "E" Subscript, "C" "F" , Baselinecos−12·62−E2F2·62=ECF
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Expression 4: "E" Subscript, "F" , Baseline equals StartRoot, 2 times 6 squared minus left parenthesis, 2 times 6 squared , right parenthesis cos "E" Subscript, "C" "F" , Baseline , EndRootEF=2·62−2·62cosECF
equals=
66
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Center:
center: left parenthesis, 0 , 0.5 , right parenthesis0,0.5