Hey if someone can help me I'd appreciate it please show your work.

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Sketch one cycle if the cosine function y=2cos2theta