A store sells 6 T-shirts for $59.34. What is the unit cost per T-shirt? OA. $9.89
OB. $8.48
OC. $53,34
OD $0.10

Can someone be awesome and me with : (

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

Which of the following is not a subset of {1,2,3}?