Question 15 it’s timed i rlly need

Aplus trig, question find the measure of angle a 5.1 8.2

Briefly explain one difference in the practice of realpolitik by louis napoleon and otto von bismarck.

Select the correct answer. what was edwin hubble's contribution to the field of astronomy? a. he discovered variable stars. b. he proved that the heliocentric model accurately described our solar system. c. he found a relationship between the period luminosity and distance of stars. d. he proved that the universe is finite. e. he discovered that the universe was expanding.