Which of the following numbers is rational?

Which of the following number(s) is/are rational? (a) sin15^0 (b) cos15^0 (c) sin15^0cos15^0 (d) sin15^0cos75^0

Classify the following numbers as rational or irrational. 30.2323342345…

Classify the following numbers as rational or irrational. 2pi

Classify the following numbers as rational or irrational. 0.3030030003…

Classify the following numbers as rational or irrational. 11.21132435465

Classify the following numbers as rational or irrational. 7.484848…

Classify the following numbers as rational or irrational. sqrt(27)

Classify the following numbers as rational or irrational. sqrt(441)

Classify the following numbers as rational or irrational. sqrt3+sqrt2

Classify the following numbers as rational or irrational. 5-sqrt3