fi lfada2 lmansob ila ma3lam mota3mid momndam na3tabiro no9rta A(2.0.2 wa lmostawa P do lmo3adala x+y-z-3=0 1-7adid tamtilan paramitriyan lilmosat9im D almar min A wal3amodi 3ala almostawa p 2/donnez les coordonnés du point B ta9ato3 lmosta9im D et le plan (P) 3/on considere le sphere (S de centre A walati ta9ata3o lmostawa (P° wef9a ada2ira de centre B et de rayon 2 */ 7adid cho3a3 lfalak *7adid mo3adal dicartia lilfalaka )