PLEASE HELP THIS IS DUE IN AN HOUR

Find the lengths of the diagonals of this trapezoid.

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

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?