Need some help in Trigonometry? What is Trigonometry? The word trigonometry means ‘triangle measurement’.
Trigonometry is an important tool for evaluating measurements of height and distance. It plays an important role in surveying, navigation, engineering, astronomy and many other branches of physical science.
Basic Trigonometry involves the ratios of the sides of right triangles. The three ratios are called tangent, sine and cosine. It can then be extended to other ratios and Trigonometry in the Cartesian Plane.
These lessons on trigonometry will include the following topics: Basic Trigonometry, Applications of Trigonometry, Trigonometry in the Cartesian Plane, Graphs of Trigonometric Functions, and Trigonometric Identities.
Trigonometry Problems Word Problems
Sine Problems Missing angles, missing sides, word problems
Cosine Problems Missing angles, missing sides, word problems
Tangent Problems Missing angles, missing sides, word problems
Find Unknown Sides of Right Angles
Find Height of Object using Trigonometry
Trigonometry Applications
Trigonometry Word Problems
Angle of Elevation and Depression
Area of Triangle using the Sine Function
A series of free High School Trigonometry Video Lessons.
Pythagorean Theorem Proofs
Square Root Operations
Using the Pythagorean Theorem to find a Missing Hypotenuse
Using the Pythagorean Theorem to find a Missing Leg
Space Diagonals
Converse of the Pythagorean Theorem
45-45-90 Triangles
30-60-90 Triangles
Distance Formula
Equation of a Circle
Calculating Coordinates in the Unit Circle
Radian Measure of Angles
The Definitions of Sine and Cosine
Evaluating Sine and Cosine at Special Acute Angles
Evaluating Sine and Cosine at Other Special Angles
Graphs of the Sine and Cosine Functions
Transforming the Graphs of Sine and Cosine
More Transformations of Sine and Cosine
Find an Equation for the Sine or Cosine Wave
The Tangent Function
Evaluating the Tangent Function
Graph of the Tangent Function
Transforming the Tangent Graph
Intercepts and Asymptotes of Tangent Functions
Trigonometric Identities
The Reciprocal Trigonometric Functions
Graphing the Reciprocal Trigonometric Functions
Using Trigonometric Identities to Simplify Trigonometric Expressions
Asymptotes of Secant, Cosecant, and Cotangent
The Cotangent Graph
Transforming the Cotangent Graph
The Secant and Cosecant Graphs
Transforming the Secant and Cosecant Graphs
The Inverse Sine Function
The Inverse Cosine Function
The Inverse Tangent Function
Using the Inverse Trigonometric Functions
Solving Trigonometric Equations
Trigonometric Equations that Require Factoring
The Cosine Addition Formulas
The Sine Addition Formulas
Using the Sine and Cosine Addition Formulas to Prove Identities
The Double-Angle Formulas
Other Forms of the Cosine Double-Angle Formula
The Half-Angle Identities
Angle Inclination of a Line
Trigonometry Calculator with step-by-step solutions
Right Triangle Trigonometry,
Radian Measure and Circular Functions,
Graphing Trigonometric Functions,
Simplifying Trigonometric Expressions,
Verifying Trigonometric Identities,
Solving Trigonometric Equations,
Complex Numbers,
Analytic Geometry in Polar Coordinates,
Exponential and Logarithmic Functions,
Vector Arithmetic,
Vectors
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