Answer:
a) By graphing just one interval of length [tex]T[/tex]. b) Infinite number of angles, c) Infinite times.
Step-by-step explanation:
Any function is periodical when:
[tex]f(t) = f(t+i\cdot T)[/tex], [tex]\forall i \in \mathbb{N}_{O}[/tex]
Where [tex]T[/tex] is the period of the function. The periodicity of the function allows us to limit the graphing of the function to just an interval of one period and according to the definition, you can expect same output with n different angles (infinite number of angles and same output infinite times).
