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Unit: Right triangles & trigonometry

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Pythagorean theorem

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Practice

Use Pythagorean theorem to find right triangle side lengthsGet 5 of 7 questions to level up!
Pythagorean theorem challengeGet 3 of 4 questions to level up!

Pythagorean theorem proofs

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Special right triangles

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Special right trianglesGet 3 of 4 questions to level up!

Quiz 1

Level up on the above skills and collect up to 240 Mastery points

Introduction to the trigonometric ratios

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Trigonometric ratios in right trianglesGet 3 of 4 questions to level up!

Solving for a side in a right triangle using the trigonometric ratios

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Solve for a side in right trianglesGet 3 of 4 questions to level up!

Solving for an angle in a right triangle using the trigonometric ratios

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Intro to inverse trig functions
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Solve for an angle in right trianglesGet 3 of 4 questions to level up!

Modeling with right triangles

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Right triangle trigonometry word problemsGet 3 of 4 questions to level up!

Quiz 2

Level up on the above skills and collect up to 320 Mastery points

Trigonometric ratios & similarity

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Sine & cosine of complementary angles

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Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 700 Mastery points!

About this unit

Triangles are not always right (although they are never wrong), but when they are it opens up an exciting world of possibilities. Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.