Using Complementary Angles to Find Unknown Angle Measures

This video tutorial teaches how to solve for unknown angle measures using complementary angles. It begins with an introduction to the concept and highlights common mistakes, such as incorrect addition in angle equations. The tutorial explains complementary angles, emphasizing that they add up to 90 degrees, and provides examples to illustrate the concept. By the end, viewers will understand how to solve for unknown angles by applying the principle of complementary angles.

Explain the mistake a student might make when solving the equation 12 degrees plus x equals 90 degrees.

What do complementary angles add up to?