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Trigonometry

Law of sines

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Solving for a side with the law of sines

(Opens a modal)

Solving for an angle with the law of sines

(Opens a modal)

Proof of the law of sines

(Opens a modal)

Practice

Solve triangles using the law of sinesGet 3 of 4 questions to level up!

Law of cosines

Learn

Solving for a side with the law of cosines

(Opens a modal)

Solving for an angle with the law of cosines

(Opens a modal)

Proof of the law of cosines

(Opens a modal)

Practice

Solve triangles using the law of cosinesGet 3 of 4 questions to level up!

Solving general triangles

Learn

Trig word problem: stars

(Opens a modal)

Laws of sines and cosines review

(Opens a modal)

Practice

General triangle word problemsGet 3 of 4 questions to level up!

Introduction to radians

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Intro to radians

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Radians & degrees

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Degrees to radians

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Radians to degrees

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Radian angles & quadrants

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Practice

Radians & degreesGet 3 of 4 questions to level up!

Unit circle definition of sine, cosine, & tangent

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(Opens a modal)

The trig functions & right triangle trig ratios

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Trig unit circle review

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Graphs of sine, cosine, & tangent

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Graph of y=sin(x)

(Opens a modal)

Graph of y=tan(x)

(Opens a modal)

Intersection points of y=sin(x) and y=cos(x)

(Opens a modal)

Basic trigonometric identities

Learn

Sine & cosine identities: symmetry

(Opens a modal)

Tangent identities: symmetry

(Opens a modal)

Sine & cosine identities: periodicity

(Opens a modal)

Tangent identities: periodicity

(Opens a modal)

Trigonometric values of special angles

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Trig values of special angles

(Opens a modal)

Practice

Trig values of special anglesGet 3 of 4 questions to level up!

Pythagorean identity

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Proof of the Pythagorean trig identity

(Opens a modal)

Using the Pythagorean trig identity

(Opens a modal)

Pythagorean identity review

(Opens a modal)

Practice

Use the Pythagorean identityGet 3 of 4 questions to level up!

Introduction to amplitude, midline, & extrema of sinusoidal functions

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Features of sinusoidal functions

(Opens a modal)

Practice

Midline of sinusoidal functions from graphGet 3 of 4 questions to level up!

Amplitude of sinusoidal functions from graphGet 3 of 4 questions to level up!

Finding amplitude & midline from formula

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Amplitude & period of sinusoidal functions from equation

(Opens a modal)

Practice

Midline of sinusoidal functions from equationGet 3 of 4 questions to level up!

Amplitude of sinusoidal functions from equationGet 3 of 4 questions to level up!

Period of sinusoidal functions

Learn

Amplitude & period of sinusoidal functions from equation

(Opens a modal)

Midline, amplitude, and period review

(Opens a modal)

Practice

Period of sinusoidal functions from graphGet 3 of 4 questions to level up!

Period of sinusoidal functions from equationGet 3 of 4 questions to level up!

Graphing sinusoidal functions

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Transforming sinusoidal graphs: vertical stretch & horizontal reflection

(Opens a modal)

Transforming sinusoidal graphs: vertical & horizontal stretches

(Opens a modal)

Practice

Graph sinusoidal functionsGet 3 of 4 questions to level up!

Constructing sinusoidal functions

Learn

Sinusoidal function from graph

(Opens a modal)

Trig word problem: modeling daily temperature

(Opens a modal)

Trig word problem: modeling annual temperature

(Opens a modal)

Practice

Construct sinusoidal functionsGet 3 of 4 questions to level up!

Modeling with sinusoidal functionsGet 3 of 4 questions to level up!

About this unit

Learn about the definition of the basic trigonometric functions (sin(x), cos(x), and tan(x)), and use advanced trigonometric functions for various purposes.