Images 2 A B C AB AC

< Previous photo
Photo - 11
Next photo >
2 a b c ab ac. 2ab+2bc. 2(Ab+BC)=. A2 b2 c2 2bc cos a. A2 ab BC c2.
2ab+2bc. 2(Ab+BC)=. A2 b2 c2 2bc cos a. A2 ab BC c2.

See also