18 Videos for "law of cosines"

The Law of Cosines  Concept
Math › Precalculus › Basic Trigonometry
How to define and use the law of cosines. 
The Law of Cosines  Concept
Math › Trigonometry › Basic Trigonometry
How to define and use the law of cosines. 
The Law of Cosines  Concept
Math › Geometry › Basic Trigonometry
How to define and use the law of cosines. 
The Law of Cosines  Problem 1
Math › Geometry › Basic Trigonometry
How to use the law of cosines to find a missing side in a triangle. 
The Law of Cosines  Problem 2
Math › Geometry › Basic Trigonometry
How to use the law of cosines to find a missing angle given three sides in a triangle. 
The Law of Cosines  Problem 1
Math › Trigonometry › Basic Trigonometry
How to use the law of cosines to find a missing side in a triangle. 
The Law of Cosines  Problem 1
Math › Precalculus › Basic Trigonometry
How to use the law of cosines to find a missing side in a triangle. 
The Law of Cosines  Problem 2
Math › Trigonometry › Basic Trigonometry
How to use the law of cosines to find a missing angle given three sides in a triangle. 
The Law of Cosines  Problem 2
Math › Precalculus › Basic Trigonometry
How to use the law of cosines to find a missing angle given three sides in a triangle. 
The Cosine Addition Formulas  Concept
Math › Precalculus › Advanced Trigonometry
How to derive the cosine of a difference formula. 
The Cosine Addition Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to derive the cosine of a difference formula. 
The Resultant of Two Forces  Problem 1
Math › Precalculus › Vectors and Parametric Equations
How to find the resultant of two forces. 
The Resultant of Two Forces  Problem 2
Math › Precalculus › Vectors and Parametric Equations
How to find the resultant of two forces at an acute angle (45 degrees). 
Navigation Problems  Problem 2
Math › Precalculus › Vectors and Parametric Equations
How we find the course and groundspeed of a complicated airplane problem when we are given its velocity and the wind velocity at 210 and 270 degrees. 
Navigation Problems  Problem 3
Math › Precalculus › Vectors and Parametric Equations
How we find the course and groundspeed of an airplane when we are given its velocity and the wind velocity. 
The Angle Between Vectors  Problem 4
Math › Precalculus › Vectors and Parametric Equations
How to derive the formula for the angle between two vectors. 
The Resultant of Two Forces  Problem 3
Math › Precalculus › Vectors and Parametric Equations
How to find the resultant of two forces. 
The Distance Formula in Polar Coordinates  Concept
Math › Precalculus › Polar Coordinates and Complex Numbers
How to derive the distance formula for polar coordinates.