In the circle below, the sum of which arcs is equivalent to arc AE? 1. arc AE = arc AB + arc BC
2. arc AE = arc AC + arc CD
3. arc AE = arc AD + arc DE
4. arc AE = arc CD + arc DE

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.