greatwhiteshark
Full Member
- Joined
- May 8, 2005
- Messages
- 279
Prove an identity using law of cosines:
A = alpha
B = Beta
C = Gamma
cosA/a + cosB/b + cosC/c = a^2 + b^2 + c^2/2abc
A = alpha
B = Beta
C = Gamma
cosA/a + cosB/b + cosC/c = a^2 + b^2 + c^2/2abc