Complementary Angles Teacher Resources
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Sine and Cosine of Complementary Angles and Special Angles
9th - 10th CCSS: Designed
Building trigonometric basics here will last a mathematical lifetime. Learners expand on the previous lesson in a 36-part series by examining relationships between the sine and cosine of complementary angles. They also review the ratios...
Write Expressions and Determine the Measure of Complementary Angles (Example)
3 mins 7th - 10th CCSS: Adaptable
Investigate algebraic applications of complementary angles. Young scholars watch as the instructor describes and defines complementary angles. He then shows an example of finding an unknown value of x given expressions for a pair of...
Find Angle Measurements Using Complementary and Supplementary Angles
4 mins 6th - 8th CCSS: Designed
How can geometry learners remember the difference between supplementary and complementary angles? Not only will the video explain how to remember these two angles, but it also demonstrates how to find unknown angles knowing the degree of...
Write and Solve Equations Using Complementary and Supplementary Angles
3 mins 6th - 8th CCSS: Designed
How can geometry students find out how much the Leaning Tower of Pisa is leaning? The activity in this resource uses the complementary angle to write an equation and solve for the unknown angle. It is the second video on solving for...
How Do You Use Complementary Angles to Find a Missing Angle?
3 mins 6th - 10th
Are complementary angles nice to each other? That's not what complementary means in math. Complementary angles are two angles that add up to 90 degrees and form a right triangle. So if given one value in a problem about complementary...
Sine and Cosine of Complementary Angles Lesson Seed
9th - 11th CCSS: Designed
This resource suggests various activities to establish the relationship between the sine and cosine of complementary angles. The activities have learners making conjectures based on their explorations and providing rationales to support...
Write Expressions for Complementary Angles and Supplementary Angles (Basic) (Example)
2 mins 7th - 10th CCSS: Adaptable
A straightforward lesson explains the meaning of complementary and supplementary angles. The instructor uses both an algebraic representation and a numeric example to describe each angle pair.