I need to know the number of errors. Where they are and what the person could have done instead. 50 points. Will give Brainliest to the best answer.

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Select the graph of the solution. click until the correct graph appears. |x| = 3