Expression 6: "D" Subscript, 2 , Baseline equals left parenthesis, "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , negative "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , negative "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , right parenthesisD2=d·sinπ4,−d·sinπ4,−d·sinπ4
Expression 7: vector left parenthesis, "C" Subscript, 1 , Baseline , "D" Subscript, 2 , Baseline , right parenthesisvectorC1,D2
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Expression 8: "D" Subscript, 3 , Baseline equals left parenthesis, negative "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , negative "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , right parenthesisD3=−d·sinπ4,d·sinπ4,−d·sinπ4
Expression 9: vector left parenthesis, "C" Subscript, 1 , Baseline , "D" Subscript, 3 , Baseline , right parenthesisvectorC1,D3
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Expression 10: "D" Subscript, 4 , Baseline equals left parenthesis, negative "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , negative "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , "d" times sin left parenthesis, StartFraction, pi Over 4 , EndFraction , right parenthesis , right parenthesisD4=−d·sinπ4,−d·sinπ4,d·sinπ4
