Expression 3: "a" Start integral from 0 to StartFraction, pi Over 2 "a" , EndFraction , end integral, cosine left parenthesis, "a" theta , right parenthesis "d" thetaa∫π2a0cosaθdθ
equals=
11
3
Expression 4: Start integral from 0 to StartFraction, pi Over 2 "a" , EndFraction , end integral, StartRoot, StartFraction, cos squared left parenthesis, "a" theta , right parenthesis plus StartNestedFraction, "a" squared NestedOver 4 , EndNestedFraction sin squared left parenthesis, "a" theta , right parenthesis Over cos left parenthesis, "a" theta , right parenthesis , EndFraction , EndRoot "d" theta∫π2a0cos2aθ+a24sin2aθcosaθdθ
