## MAFS.912.F-TF.3.8: Prove the addition and subtraction, half-angle, and double-angle formulas for sine, cosine, and tangent and use these formulas to solve problems.

There are 25 resources.
Title Description Thumbnail Image Curriculum Topics

## Math Definitions Collection: Trigonometry

Trig Expressions and Identities

## Math Definitions Collection: Geometry

3-Dimensional Figures, Definition of an Angle, Exploring Coordinate Systems, Geometric Constructions with Points and Lines, Definition of a Point, Definition of a Triangle, Definition of a Circle, Definition of Transformations, The Distance Formula, Definition of a Polygon, Definition of a Plane, Definition of a Line, Midpoint Formula, Applications of Polygons, Right Triangles, Trig Expressions and Identities, Definition of a Quadrilateral, Applications of Points and Lines, Proportions, Area and Perimeter of Triangles, Area and Perimeter of Quadrilaterals and Pyramids

## Math Video Collection: Texas Instruments Tutorial Videos

### Overview This colle

Rational Expressions, Sequences, Series, Polynomial Functions and Equations, Graphs of Quadratic Functions, Quadratic Equations and Functions, Solving Systems of Equations, Trig Expressions and Identities, Probability, Geometric Constructions with Triangles, Composite Functions, Geometric Constructions with Angles and Planes, Distance Formula, Data Analysis, Slope, Special Functions, Trigonometric Functions, Graphs of Exponential and Logarithmic Functions, Radical Functions and Equations, Rational Functions and Equations, Slope-Intercept Form, Coordinate Systems, Graphs of Linear Functions, Inequalities, Matrix Operations and Midpoint Formula

## Closed Captioned Video: Trig Identities

### Closed Captioned Video: Trig Identities In this TI Nspire tutorial for the TI-Nspire CAS, the Calculator window is used to find the trigonometric identities for addition and subtraction of sine and cosine. This video supports the TI-Nspire Clickpad and Touchpad. This Mini-Tutorial Video includes a worksheet. .

Trig Expressions and Identities

## Definition--Geometry Basics--Pythagorean Identity 1

### Definition--Geometry Basics--Pythagorean Identity 1 This collection of clip art images includes image sequences for key topics in geometry. This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.Note: The download is a PNG file.

Trig Expressions and Identities

## Definition--Geometry Basics--Pythagorean Identity 2

### Definition--Geometry Basics--Pythagorean Identity 2 This collection of clip art images includes image sequences for key topics in geometry. This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.Note: The download is a PNG file.

Trig Expressions and Identities

## Definition--Geometry Basics--Pythagorean Identity 3

### Definition--Geometry Basics--Pythagorean Identity 3 This collection of clip art images includes image sequences for key topics in geometry. This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.Note: The download is a PNG file.

Trig Expressions and Identities

Right Triangles

## Definition--Trig Concepts--Cosine Difference Identity

### Definition--Trig Concepts--Cosine Difference Identity This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Cosine Ratio

### Definition--Trig Concepts--Cosine Ratio This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Cosine Sum Identity

### Definition--Trig Concepts--Cosine Sum Identity This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Cotangent Ratio

### Definition--Trig Concepts--Cotangent Ratio This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Law of Cosines

### Definition--Trig Concepts--Law of Cosines This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Law of Sines

### Definition--Trig Concepts--Law of Sines This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Secant Ratio

### Definition--Trig Concepts--Secant Ratio This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Sine Difference Identity

### Definition--Trig Concepts--Sine Difference Identity This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Sine Ratio

### Definition--Trig Concepts--Sine Ratio This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Sine Sum Identity

### Definition--Trig Concepts--Sine Sum Identity This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Tangent Difference Identity

### Definition--Trig Concepts--Tangent Difference Identity This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Tangent Ratio

### Definition--Trig Concepts--Tangent Ratio This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Tangent Sum Identity

### Definition--Trig Concepts--Tangent Sum Identity This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Definition--Trig Concepts--Trig Ratios

### Definition--Trig Concepts--Trig Ratios This is part of a collection of terms and definitions related to trigonometry concepts.

Trig Expressions and Identities

## Video Transcript: TI-Nspire Mini-Tutorial: (CAS) Trig Identities: Addition and Subtraction Identities for Sine and Cosine

### Video Transcript: TI-Nspire Mini-Tutorial: (CAS) Trig Identities: Addition and Subtraction Identities for Sine and Cosine This is the transcript for the TI-Nspire Mini-Tutorial entitled, Trig Identities: Addition and Subtraction Identities for Sine and Cosine.

Trig Expressions and Identities

## VIDEO: Ti-Nspire Mini-Tutorial, Video 34

### VIDEO: TI-Nspire Mini-Tutorial: (CAS) Trig Identities: Addition and Subtraction Identities for Sine and Cosine In this TI Nspire tutorial for the TI-Nspire CAS, the Calculator window is used to find the trigonometric identities for addition and subtraction of sine and cosine. This video supports the TI-Nspire Clickpad and Touchpad.

Trig Expressions and Identities

## Worksheet: TI-Nspire Mini-Tutorial: Trig Identities

### Worksheet: TI-Nspire Mini-Tutorial: Trig Identities This is part of a collection of math worksheets on the use of the TI-Nspire graphing calculator. Each worksheet supports a companion TI-Nspire Mini-Tutorial video. It provides all the keystrokes for the activity.

Trig Expressions and Identities