If angles \( \angle e \) and \( \angle f \) are complementary, it means that the sum of their measures is 90 degrees.
Given that \( \angle f = 17^\circ \), we can find \( \angle e \) using the following equation:
\[ \angle e + \angle f = 90^\circ \]
Substituting \( \angle f \) into the equation, we get:
\[ \angle e + 17^\circ = 90^\circ \]
Now, solve for \( \angle e \):
\[ \angle e = 90^\circ - 17^\circ = 73^\circ \]
So, \( \angle e \) is \( 73^\circ \).