Question Number 189854 by a.lgnaoui last updated on 22/Mar/23
$$\mathrm{1}−{determiner}\:{l}\:{aire}\:{de}\:{la} \\ $$$${partie}\:{hachuree}\left({SDEB}\right) \\ $$$$\mathrm{2}−{le}\:{raport}\:\frac{{R}_{\mathrm{1}} }{{R}_{\mathrm{2}} } \\ $$$${sachant}\:{que}:\:{AB}=\mathrm{20}\left({diametre}\:{de}\:\left({C}\right)\right. \\ $$$$\:\:\measuredangle{CDE}=\mathrm{60}^{°} \:\:\:\measuredangle{OAD}=\mathrm{30}°.\:\:\left[{AI}\mid\mid{EF}\right. \\ $$$$\:\: \\ $$
Commented by a.lgnaoui last updated on 22/Mar/23
