trigonometric equations 195 videos

Intercepts of Linear Equations
Algebra Linear Equations and Their Graphs
How to work with x an y intercepts graphically or algebraically.
x intercept y intercept y=mx+b 
The Discriminant of a Quadratic Equation
Algebra 2 Quadratic Equations and Inequalities
How to use the discriminant to know the number and type of solutions to a quadratic.
discriminant type of solution number of solutions type of roots number of roots 
DeMoivre's Theorem
Precalculus Polar Coordinates and Complex Numbers
How to raise a complex number to an integer power using DeMoivre's Theorem.
complex numbers trigonometric form modulus argument 
Families of Polar Curves: Conic Sections
Precalculus Polar Coordinates and Complex Numbers
How to describe the polar equations of conic sections.
polar graph polar equation polar curve conic sections focus origin pole parabola symmetric about the x axis parabola vertex 
Parametrizing a Circle
Precalculus Vectors and Parametric Equations
How to write the parametric equations of a circle centered at (0,0) with radius r, oriented counterclockwise.
the unit circle cosine sine parametrization parametric equations circle counter clockwise 
Cramer's Rule
Precalculus Systems of Linear Equations and Matrices
How to solve a system of two linear equations with two unknowns using Cramer's rule.
systems of linear equations Cramer's rule determinant coefficient matrix 
Vertical and Horizontal Shifts of Quadratic Graphs
Algebra Quadratic Equations and Functions
How to graph parabolas with horizontal and vertical shifts without making a table of values.
shift vertex quadratic equation 
Coin Word Problems
Algebra Word Problems Using Systems of Equations
How to solve word problems about values and number of coins.
coins system of equations substitution 
Age Word Problems
Algebra Word Problems Using Systems of Equations
How to solve word problems about the ages of two people.
age system of equations substitution 
Symmetry of Polar Graphs
Precalculus Polar Coordinates and Complex Numbers
How to determine if the graph of a polar equation is symmetric about the xaxis.
polar graph polar equation symmetry reflection x axis symmetric about the x axis 
Graphing Radical Equations using Shifts
Algebra Radical Expressions and Equations
How to graph radical functions without making a table of values.
shift dilation 
Finding the Slope of a Line from an Equation
Algebra Linear Equations and Their Graphs
How to use the slopeintercept form of a line.
slope slope intercept form y intercept 
Graphing Equations by Making a Table of Values
PreAlgebra Graphing in Two Dimensions
Graphing a line by making a table of values

Finding the Slope of a Line from an Equation
Algebra 2 Graphs of Linear Equations
How to use the slopeintercept form of a line.
slope slope intercept form y intercept 
Applied Linear Equations: Mixture Problem
Algebra 2 Linear Equations
How to solve a mixture problem when the size difference between the two containers is known.
word problem mixture 
Applied Linear Equations: Investment Problem
Algebra 2 Linear Equations
How to solve an interest problem when given the total amount deposited.
word problem investment interest