Solving Trig Equations Review #3

Solve  $\sin\theta+\sin2\theta=0$  for  $0\degree\le\theta<360\degree$ .

•  $0\degree,\ 120\degree,\ 180\degree,\ 240\degree$  

•  $0\degree,\ 150\degree,\ 180\degree,\ 210\degree$  

•  $0\degree,\ 120\degree,\ 180\degree,\ 300\degree$  

•  $0\degree,\ 120\degree$  

Solve  $\cos\theta+\cos2\theta=0$  for  $0\degree\le\theta<360\degree$  

•  $30\degree,\ 180\degree,\ 330\degree$  

•  $60\degree,\ 180\degree$  

•  $30\degree,\ 270\degree$  

•  $60\degree,\ 180\degree,\ 300\degree$