If one angle measures $3°$, which of the following angles is complementary to it?

• A. $87°$
• B. $93°$
• C. $180°$
• D. $77°$

Answer: (A)

Verified step by step guidance

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