so sanh
333^444 va 444^333
tinh :
\(\frac{2^{50}.3^{61}+2^{90}.3^{16}}{2^{51}.3^{61}+2^{31}.3^{16}}\)
lam on giai dum mk cai nha!
mong nhan dc su giup do tu cac ban
Cho tam giac ABC co goc A = 90 do. Ve Tia phan giac Bd cua goc B ( D thuoc AC ). Tren canh BC lay E cho BE = BA
a) so sanh do dai doan AD va DE, so sanh goc EDC va ABC
b) cm AE vuong goc voi BD
Cho tam giac ABC co goc A =90 do . Tren cach BC lay diem E sao cho BE=BA.tia phan giac cua goc B cat canh AC tai D
a,So sanh do dai cac doan thang DA,DE
.b, Tinh so do goc BED
c, Chung minh BD vuong goc voi AE
D, So sanh so do cac goc ABC va goc CAE
Cho tam giác abc ,co goc a bang 90 do ,tia pg bd. Lay diem e sao cho be = ba so sanh goc edc va goc abc
Cho tam giac ABC vuong tai A,ke duong phan giaC BD cua goc B .Duong thang A di qua va vuong goc voi BD cat BC tai E
a,Chung minh :BA = BE
b,Chung minh tam giac BED la tam giac vuong
c, So sanh AD va DC
co ai do lam on giup toi voi
so sanh
a) 2^90 va 5^36
b) 99^200 va 9999^100
c) 2^150 va 3^100
d) \(\sqrt{26+2}\) va \(\sqrt{26}\)+ \(\sqrt{2}\)
biet Ax // By va AOB=90 .CHO a=145 tinh so do a cua goc A. neu ai lam minh tixk cho
cho tam giac ABC co A = 90 do AB=6cm Ac= 8cm
a tinh BC
b so sanh cac goc cua tam giac ABC
c lay M thuoc AB , N thuoc AC so sanh BC va MN
cho tam giac abc, goc A tu, tren canh BC lay diem M, N sao cho BN=BA, CM=CA
a, so sanh goc AMC va ANB
b, so sanh canh AM va AN
c, biet goc ABC =40 do, goc ACB =30 do , tinh so do 3 goc cua tam giac AMN