I am struggling

I am quite struggling with these topics:

• unit Circle topic.
  
• how you get the sin, cos & tan of the theta. I don't know how to deal with cos and tan. Like i cant solve this: cos^2(theta)=cos(theta) where 0degrees is greater than or equal to theta and less than or equal to 360. something like that. or this one: 3cos(theta)-1=-2cos(theta)
  
• ambigious triangle.
• As simple as getting the vertex. I am just weak with getting the vertex.
  

That's it. I think.

Publish Post