Complementary Angle Calculator
Easily calculate the complementary angle for any given angle. Enter an angle in degrees and find its complement, the angle that adds up to 90 degrees. A simple and visual tool for geometry and math calculations.
Enter an angle in degrees to calculate its complementary angle. Complementary angles are two angles that add up to 90°.
Visual Representation
Blue Angle: Complementary Angle (°)
Remaining Angle: Input Angle (°)
Understanding Complementary Angles
In geometry, two angles are complementary if their sum is exactly 90 degrees. If you have an angle, its complementary angle is what you need to add to it to reach a right angle (90°).
Formula: If ∠A is an angle, its complementary angle ∠B can be found using the formula:
∠B = 90° - ∠A
Example: If you have an angle of 30°, its complementary angle is 90° - 30° = 60°. Therefore, 30° and 60° are complementary angles.
This tool helps you quickly find the complementary angle for any given angle, making it useful for students, educators, and anyone working with geometry.