Can anyone help me with this project? It is past due.

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

Acylinder has volume 45π and radius 3. what is it’s height?

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq