A model house is measured 9 1/4 inches wide and 8 4/5 inches long what is the total area of the base

What is the approximate circumference of the circle shown below?

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

What is always true when two whole numbers are subtracted?