$\theta=\frac{3\pi}{4},\frac{4\pi}{3},\frac{7\pi}{4}$  

 $\theta=\frac{3\pi}{4},\frac{7\pi}{4}$  

 $\theta=\frac{\pi}{3},\frac{4\pi}{3}$  

 $\theta=\frac{3\pi}{4},\frac{4\pi}{3}$  

 $\theta=\frac{\pi}{6},\frac{\pi}{3},\frac{11\pi}{6}$  

 $\theta=\frac{\pi}{6},\frac{11\pi}{6}$  

 $\theta=\frac{\pi}{6}$  

 $\theta=\frac{\pi}{3},\frac{5\pi}{3}$  

 $\theta=0,\frac{\pi}{3}$  

 $\theta=0$  

 $\theta=\frac{\pi}{3},\frac{5\pi}{3}$  

 $No\ Solution$  

 $\theta=\pi$  

 $\theta=\frac{7\pi}{4}$  

 $\theta=\frac{3\pi}{4},\frac{7\pi}{4}$  

 $\theta=0,\frac{3\pi}{4}$  

 $\theta=\frac{2\pi}{3},\frac{7\pi}{6}$  

 $\theta=\frac{\pi}{3}$  

 $\theta=\frac{7\pi}{6},\frac{11\pi}{6}$  

 $\theta=\frac{2\pi}{3},\frac{7\pi}{6},\frac{11\pi}{6}$  

 $\theta=0,\pi,\frac{4\pi}{3}$  

 $\theta=0$  

 $\theta=\frac{\pi}{4},\frac{3\pi}{4},\frac{5\pi}{4},\frac{7\pi}{4}$  

 $\theta=0,\pi$  

 $\theta=\frac{\pi}{6},\frac{5\pi}{6},\frac{7\pi}{6},\frac{11\pi}{6}$  

 $\theta=\frac{\pi}{3},\frac{2\pi}{3},\frac{4\pi}{3},\frac{5\pi}{3}$  

 $\theta=\frac{\pi}{6},\frac{7\pi}{6}$  

 $\theta=\frac{\pi}{6},\frac{5\pi}{6},\frac{7\pi}{6}$