help!!!

C

congtu200860

kinh nghiem thi to ko dam noi la coa
nhung mot trong nhung cach lam toan quy tich la ve nhieu hinh anh khac nhau de xem no di dong tren duong nao
 
T

tubeoham

tim quy tich ah! minh cung dang po tay po chan day! Theo minh thay thi trong SGK ko co cach giai cu the. lieu co ban nao chi cho minh cach giai hay huong giai ko? thanks n`
 
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