Level:
Project ID:
2010015304
Source Problem:
Accepted:
0
Clonable:
1
Easy:
1
Which of the following formulas applies to the given triangle \( ABC \)? (See the picture.)
\( c^2 = a^2+b^2 -2ab\cos\gamma \)
\( c^2 = a^2+b^2 +2ab\cos\gamma \)
\( c^2 = a^2+b^2 -2ab\cos\alpha \)
\( c^2 = a^2+b^2 -2ab\sin\beta \)