Khan Academy
Khan Academy: Angles (Part 2)
Describes complementary and supplementary angles. Explains how to use properties of complementary and supplementary angles to solve for missing angle measures. Introduces idea that vertical angles (opposite angles) are congruent. [9:05]
Sophia Learning
Sophia: Angles From Ratios and Algebraic Expressions
Explore how to determine the angle measurement of supplementary and complementary angles with ratios and algebraic expressions in the video tutorial. [6:05] Assess knowledge with a quiz.
Loyola University Chicago
Math Flix: Complementary and Supplementary Angle Definitions
This video provides an opportunity to learn about complementary and supplementary angles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept. [3:41]
Khan Academy
Khan Academy: Angles (Part 2)
More on complementary and supplementary angles. Introduction to opposite angles.
Khan Academy
Khan Academy: Trig Word Problem: Complementary Angles
Sal solves a problem about a submerged pyramid using the fact that the sine of an angle is equal to the cosine of its complementary angle.
Khan Academy
Khan Academy: Using Complementary Angles
Sal solved the following problem: Given that cos(58 degrees)=0.53, find sin(32 degrees).
Khan Academy
Khan Academy: Sine & Cosine of Complementary Angles
Sal shows that the sine of any angle is equal to the cosine of its complementary angle.
Sophia Learning
Sophia: Complementary Angles
Complementary angles are introduced in this video tutorial. [1:18] Students can check their understanding with an assessment.
Sophia Learning
Sophia: Finding Unknown Angles From Complementary Angles
This video lesson [4:01] demonstrates how to find a missing angle in a complementary angle pair. Students can check their understanding with an assessment.
Loyola University Chicago
Math Flix: Complementary/supplementary Angle Computation
This QuickTime movie provides an opportunity to learn about computing the total degrees for complementary and supplementary angles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying...