Find the mean of the following data set 5,9,3,12,14,67,22,45,1,12,14

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.

Which expression is equivalent to the expression shown?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?