If an angle measures $1°$, which of the following angles is complementary to it?

• A. $91°$
• B. $179°$
• C. $89°$
• D. $180°$

Answer: (C)

Verified step by step guidance

1. Recall the definition of complementary angles: two angles are complementary if the sum of their measures is exactly 90 degrees.
2. Given one angle measures \$1^\circ\(, let the complementary angle be \)x^\circ$.
3. Set up the equation based on the definition: \$1^\circ + x^\circ = 90^\circ$.
4. Solve for \(x\) by subtracting \$1^\circ\( from both sides: \)x = 90^\circ - 1^\circ$.
5. Calculate \(x\) to find the complementary angle measure, which will be \$89^\circ$.