Which of the following is the correct Lami's equation?
1
\(\frac{P}{\sin \theta}=\frac{Q}{\sin \alpha}=\frac{R}{\sin \beta}\)
2
\(\frac{P}{\cos \theta}=\frac{Q}{\cos \alpha}=\frac{R}{\cos \beta} \)
3
\(\frac{P}{\sin \alpha}=\frac{Q}{\sin \beta}=\frac{R}{\sin \theta}\)
4
\(\frac{P}{\cos \alpha}=\frac{Q}{\cos \beta}=\frac{R}{\cos \theta}\)
5
Not Attempted