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Curated Video
Finding Missing Angle Measurements Using Complementary and Supplementary Angles
This video lesson teaches students how to find missing angle measurements by using complementary and supplementary angles. It explains the concepts of complementary angles (summing to 90 degrees) and supplementary angles (summing to 180...
Curated OER
What are the Legs and Hypotenuse of a Right Triangle?
What are all the parts of a right triangle called? What makes it a right triangle? Legs? Triangles have legs? Hypotenuse? Pythagorean Theorem? The instructor diagrams and identifies all the parts of a right triangle for you.
Curated OER
How Do You Find a Missing Side of a Right Triangle Using Cosine?
Trigonometry? What's trigonometry. Well, something to do with triangles, right? Right! Right triangles! In this problem, find the missing length of one of the sides. So set this up as a ratio: cosine(A) = adjacent side length divided by...
Sophia Learning
Sophia: Finding a Horizontal Tangent: Lesson 7
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 7 of 7 in the series titled "Finding a Horizontal Tangent."
Khan Academy
Khan Academy: Unit Circle: Unit Circle Definition of Trig Functions
In this video tutorial students extend SOH CAH TOA trigonometric relationships so that we can define trig functions for a broader class of angles.
Sophia Learning
Sophia: Classifying Quadrilaterals
Quadrilaterals are explored in this video lesson. The tutorial describes the characteristics of various quadrilaterals. Students can check their understanding with an assessment. [6:17]
Sophia Learning
Sophia: Diagonal
In this video tutorial, the instructor defines and provides examples of diagonals in polygons. Students can check their understanding with an assessment. [3:21]
Sophia Learning
Sophia: Inverse Sine
This video tutorial introduces and provides examples of the inverse sine function. The lesson demonstrates how to use the inverse sine ratio to solve for an unknown angle in a right triangle.
Sophia Learning
Sophia: Angles of a Triangle
This video tutorial demonstrates how to find the interior and exterior angles of a triangle.
Sophia Learning
Sophia: Finding a Horizontal Tangent: Lesson 2
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 2 of 7 in the series titled "Finding a Horizontal Tangent."
Sophia Learning
Sophia: Finding a Horizontal Tangent: Lesson 4
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 4 of 7 in the series titled "Finding a Horizontal Tangent."
Sophia Learning
Sophia: Finding a Horizontal Tangent: Lesson 5
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 5 of 7 in the series titled "Finding a Horizontal Tangent."
Sophia Learning
Sophia: Finding a Horizontal Tangent: Lesson 1
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 1 of 7 in the series titled "Finding a Horizontal Tangent."
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: Triangle Exterior Angles Practice
This video lesson demonstrates how to use the triangle exterior angle theorem to find interior angle measurements of a triangle. [4:28]
Sophia Learning
Sophia: Adjacent Angles
This video lesson [2:10] defines and provides an example of adjacent angles. Students can check their understanding with an assessment.