1103076902

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Project ID: 
1103076902
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Accepted: 
1
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1
Easy: 
1
Given a triangle \( ABC \), which of the following equalities is valid?
\( \frac a{\sin\alpha} = \frac b{\sin \beta} \)
\( \frac ab = \frac{\sin \beta}{\sin \alpha} \)
\( \frac a{\sin\alpha} =\frac{\sin\gamma}c \)
\( \frac c{\sin\gamma} = \frac{\sin \alpha}a \)