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Mathematics

947Introduction to Trigonometric Ratios
948Identifying Opposite, Adjacent, and Hypotenuse
949The Sine Ratio (SOH)
950The Cosine Ratio (CAH)
951The Tangent Ratio (TOA)
952Finding Side Lengths Using Sine
953Finding Side Lengths Using Cosine
954Finding Side Lengths Using Tangent
955Finding Angles Using Inverse Trig Functions
956Choosing the Appropriate Trig Ratio
957What Does 'Solving a Right Triangle' Mean?
958Given Two Sides: Finding the Third Side
959Given One Side and One Acute Angle: Finding Other Sides
960Finding Missing Angles in Right Triangles
961Solving When Given the Hypotenuse and One Acute Angle
962Solving When Given One Leg and One Acute Angle
963Solving When Given Both Legs
964Choosing the Right Strategy
965Multi-Step Right Triangle Problems
966Defining Angles of Elevation and Depression
967Identifying Angles in Real-World Scenarios
968Drawing Diagrams for Angle Problems
969Using SOH-CAH-TOA with Elevation Angles
970Using SOH-CAH-TOA with Depression Angles
971Alternate Interior Angles in Elevation/Depression
972Multi-Step Elevation and Depression Problems
973Combined Problems with Distance and Height
974Setting Up Right Triangle Problems from Word Descriptions
975Angles of Elevation: Definition and Setup
976Angles of Depression: Definition and Setup
977Finding Heights Using Angles of Elevation
978Finding Distances Using Angles of Depression
979Navigation and Bearing Problems
980Two Right Triangle Problems and Indirect Measurement
981Applications in Construction and Engineering
982Mixed Application Problems and Problem-Solving Strategies

Mathematics

947Introduction to Trigonometric Ratios
948Identifying Opposite, Adjacent, and Hypotenuse
949The Sine Ratio (SOH)
950The Cosine Ratio (CAH)
951The Tangent Ratio (TOA)
952Finding Side Lengths Using Sine
953Finding Side Lengths Using Cosine
954Finding Side Lengths Using Tangent
955Finding Angles Using Inverse Trig Functions
956Choosing the Appropriate Trig Ratio
957What Does 'Solving a Right Triangle' Mean?
958Given Two Sides: Finding the Third Side
959Given One Side and One Acute Angle: Finding Other Sides
960Finding Missing Angles in Right Triangles
961Solving When Given the Hypotenuse and One Acute Angle
962Solving When Given One Leg and One Acute Angle
963Solving When Given Both Legs
964Choosing the Right Strategy
965Multi-Step Right Triangle Problems
966Defining Angles of Elevation and Depression
967Identifying Angles in Real-World Scenarios
968Drawing Diagrams for Angle Problems
969Using SOH-CAH-TOA with Elevation Angles
970Using SOH-CAH-TOA with Depression Angles
971Alternate Interior Angles in Elevation/Depression
972Multi-Step Elevation and Depression Problems
973Combined Problems with Distance and Height
974Setting Up Right Triangle Problems from Word Descriptions
975Angles of Elevation: Definition and Setup
976Angles of Depression: Definition and Setup
977Finding Heights Using Angles of Elevation
978Finding Distances Using Angles of Depression
979Navigation and Bearing Problems
980Two Right Triangle Problems and Indirect Measurement
981Applications in Construction and Engineering
982Mixed Application Problems and Problem-Solving Strategies

← Mathematics

Lesson 953 of 3,121·23. Right Triangle TrigonometryPro lesson

Finding Side Lengths Using Cosine

Use the cosine ratio to calculate unknown side lengths when given an angle and one side.

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