Jika tan θ + tan γ = p, p ≠ 0, cos θ.cos γ / sin ( θ + γ ) = . . . A. 1/p B. 2/p C. P D. 2p E. p^2

[tex]\tan{\theta}+\tan{\gamma}=p \\ \frac{\sin{\theta}}{\cos{\theta}}+\frac{\sin{\gamma}}{\cos{\gamma}}=p\\ \frac{(\sin{\theta}\times\cos{\gamma})+(\sin{\gamma}\times\cos{\theta})}{\cos{\theta}\times\cos{\gamma}}=p\\ \frac{\sin{(\theta+ \gamma)}}{\cos{\theta}\times\cos{\gamma}}=p\\ \frac{\cos{\theta}\times\cos{\gamma}}{\sin{(\theta+ \gamma)}}=\frac{1}{p}[/tex]