Expression 15: "P" Subscript, 1 , Baseline equals "D" Subscript, 1 , Baseline plus 2 "R" cosine left parenthesis, 90 minus 120 , right parenthesisP1=D1+2Rcos90−120
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Expression 16: "P" Subscript, 2 , Baseline equals "D" Subscript, 2 , Baseline plus 2 "R" sine left parenthesis, 90 minus 120 , right parenthesisP2=D2+2Rsin90−120
Expression 18: "m" Subscript, 2 , Baseline equals StartFraction, "A" Subscript, 2 , Baseline minus "P" Subscript, 2 , Baseline Over "A" Subscript, 1 , Baseline minus "P" Subscript, 1 , Baseline , EndFractionm2=A2−P2A1−P1
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Expression 19: "f" left parenthesis, "x" , right parenthesis equals "m" Subscript, 1 , Baseline "x"fx=m1x
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Expression 20: "g" left parenthesis, "x" , right parenthesis equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "A" Subscript, 1 , Baseline , right parenthesisgx=m2x−A1
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Expression 21: "f" left parenthesis, "T" Subscript, 1 , Baseline , right parenthesis tilde "g" left parenthesis, "T" Subscript, 1 , Baseline , right parenthesisfT1~gT1
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Expression 22: "T" Subscript, 2 , Baseline equals "g" left parenthesis, "T" Subscript, 1 , Baseline , right parenthesisT2=gT1
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Graphs
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Expression 24: left parenthesis, "R" cos "L" , "R" sin "L" , right parenthesisRcosL,RsinL
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Expression 25: polygon left parenthesis, "A" , "P" , right parenthesispolygonA,P
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Expression 26: polygon left parenthesis, "B" , "E" , right parenthesispolygonB,E
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Expression 27: polygon left parenthesis, "D" , "P" , right parenthesispolygonD,P