- #1
kingwinner
- 1,270
- 0
Homework Statement
1) Find the cardnality of the set of constructible angles whose cosine is
a) irrational
b) rational
2. The attempt at a solution
For the other questions I have posted my attempt, but for this one I really have no clue...
Could someone please give me some general hints?
Your help is greatly appreciated!
Last edited: