Complementary angles are two angles whose measures add up to \(90^\circ\).
Given one angle measures \(43^\circ\), you can find the other angle by subtracting \(43^\circ\) from \(90^\circ\):
\[ \text{Other angle} = 90^\circ - 43^\circ = 47^\circ \]
So, the measure of the other angle is \(47^\circ\).