Photos A2 B2 C2

< Previous photo
Photo - 19
Next photo >
A2 b2 c2. A2 b2 c2 2bc cos a. A 2 B 2 C 2 2bc cosa. Ab2 ac2+bc2.
A2 b2 c2 2bc cos a. A 2 B 2 C 2 2bc cosa. Ab2 ac2+bc2.

See also