Hi All;

I need to make a2 the subject of a1 sqrt 2gh/(a1/a2)-1 = q

firat divide bt a1 giving sqrt 2gh/(a1/a2)-1 = q/a1

square both sides giving 2gh/(a1/a2)-1 = qsq / a1sq

add one to both sides giving 2gh/(a1/a2) = qsq / a1sq + 1

stuck here.

Thanks.