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Unit: Right triangles & trigonometry

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Pythagorean theorem

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Practice

Pythagorean theorem proofs

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Special right triangles

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Quiz 1

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

Ratios in right triangles

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Introduction to the trigonometric ratios

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

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

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Quiz 2

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

Sine & cosine of complementary angles

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Modeling with right triangles

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Quiz 3

Level up on the above skills and collect up to 160 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 900 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.