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Trigonometry

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Intro to arcsineIntro to arctangentIntro to arccosineRestricting domains of functions to make them invertibleDomain & range of inverse tangent functionUsing inverse trig functions with a calculatorInverse trigonometric functions review
Practice
Evaluate inverse trig functionsGet 3 of 4 questions to level up!
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Solving sinusoidal equations of the form sin(x)=dSolving cos(θ)=1 and cos(θ)=-1
Practice
Solve sinusoidal equations (basic)Get 3 of 4 questions to level up!
Solve sinusoidal equationsGet 3 of 4 questions to level up!
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Trig word problem: solving for temperatureTrigonometric equations review
Practice
Sinusoidal models word problemsGet 3 of 4 questions to level up!
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Sine & cosine identities: symmetryTangent identities: symmetrySine & cosine identities: periodicityTangent identities: periodicity
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Review of trig angle addition identitiesUsing the cosine angle addition identityUsing the cosine double-angle identityProof of the sine angle addition identityProof of the cosine angle addition identity
Practice
Using the trig angle addition identitiesGet 3 of 4 questions to level up!
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Finding trig values using angle addition identitiesUsing trig angle addition identities: finding side lengthsUsing trig angle addition identities: manipulating expressionsUsing trigonometric identitiesTrig identity reference
Practice

About this unit

In Algebra 2, students learned about the trigonometric functions. In this unit, we extend this world by proving various trigonometric identities and defining the inverse trigonometric functions, which allow us to solve trigonometric equations.