$\frac{SinA}{SinB+SinC}+\frac{SinB}{SinC+SinA}+\frac{SinC}{SinA+SinB}<2$
Chứng minh rằng,trong mọi tam giác ta luôn có
Started By naruto01, 26-02-2014 - 21:35
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
0 members, 1 guests, 0 anonymous users