Can someone Please abswer this i'll give 40 points and maybe brainliest for the best answer :]

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.

Abcd is a square. what is the measure of angle bac

What is 1.5% of 120 or what number is 1.5% of 120