Determine whether the number $\frac{\pi}{5}$ is rational or irrational.
2025/3/21
1. Problem Description
Determine whether the number is rational or irrational.
2. Solution Steps
A rational number can be expressed as a fraction , where and are integers and . An irrational number cannot be expressed in this form.
We know that is an irrational number. Multiplying or dividing an irrational number by a non-zero rational number results in an irrational number. Since is rational and is irrational, is irrational.
3. Final Answer
Irrational