Expression 2: "A" Subscript, "B" "l" "u" "e" , Baseline equals StartFraction, left parenthesis, 5 StartRoot, 5 , EndRoot , right parenthesis squared cos left parenthesis, alpha , right parenthesis sin left parenthesis, alpha , right parenthesis Over 2 , EndFraction equals 30ABlue=552cosαsinα2
equals=
3030
2
Expression 3:
3
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Center:
center: left parenthesis, 0 , 0 , right parenthesis0,0