What does y < 1/3 -4 look like on a graph

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 expression gives you the distance between the points (5,1)and(9,-6)

Find the missing dimension! need asap! tiny square is a =3025 in ²