Expression 17: "A" Subscript, 1 , Baseline equals "R" cosine left parenthesis, negative "A" Subscript, "O" "B" , Baseline minus StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 , EndFraction minus 90 , right parenthesisA1=Rcos−AOB−BOC2−90
equals=
negative 2.5 7 6 9 2 3 0 7 6 9 2−2.57692307692
17
Expression 18: "A" Subscript, 2 , Baseline equals "R" sine left parenthesis, negative "A" Subscript, "O" "B" , Baseline minus StartFraction, "B" Subscript, "O" "C" , Baseline Over 2 , EndFraction minus 90 , right parenthesisA2=Rsin−AOB−BOC2−90
