A=2b 4 b-2a=16 i dunno what this is

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Ineed i been stuck on this question since yesterday

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.