Atheater holds 1,512 people. the 54 sections of the theater each have the same number of seats. esther wants to find the number of seats in each section. fill in the partial quotients that are missing from esther’s work 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

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25