Which shows the gcf of 18 and 24 with 18/24 in simplest form? (a) gcf: 3; 3/4 (b) gcf: 3; 6/8 (c) gcf: 6; 3/4 (d) gcf: 6; 6/8

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 is the completely factored from of xy^3-x^3y

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3