Main content
Right triangles & trigonometry
Learn
Intro to the Pythagorean theoremIntro to the Pythagorean theorem 2Pythagorean theorem word problem: fishing boatPythagorean theorem examplePythagorean theorem word problem: carpetPythagorean theorem with isosceles triangleIntroduction to the Pythagorean theoremPythagorean theorem II
Practice
Use Pythagorean theorem to find right triangle side lengthsGet 5 of 7 questions to level up!
Use Pythagorean theorem to find isosceles triangle side lengthsGet 5 of 7 questions to level up!
Pythagorean theorem challengeGet 3 of 4 questions to level up!
Learn
Garfield's proof of the Pythagorean theoremBhaskara's proof of the Pythagorean theoremPythagorean theorem proof using similarityAnother Pythagorean theorem proof
Learn
Special right triangles intro (part 1)Special right triangles intro (part 2)30-60-90 triangle example problemSpecial right triangles proof (part 1)Special right triangles proof (part 2)Area of a regular hexagonSpecial right triangles review
Practice
Special right trianglesGet 5 of 7 questions to level up!
Learn
Intro to the trigonometric ratiosTrigonometric ratios in right trianglesHypotenuse, opposite, and adjacentTrigonometric ratios in right triangles
Practice
Trigonometric ratios in right trianglesGet 3 of 4 questions to level up!
Learn
Solving for a side in right triangles with trigonometrySolving for a side in right triangles with trigonometry
Practice
Solve for a side in right trianglesGet 3 of 4 questions to level up!
Learn
Intro to inverse trig functions
Practice
Solve for an angle in right trianglesGet 3 of 4 questions to level up!
Learn
Right triangle word problemAngles of elevation and depressionRight triangle trigonometry review
Practice
Right triangle word problemsGet 3 of 4 questions to level up!
Learn
Triangle similarity & the trigonometric ratiosTrig challenge problem: verify identitiesTrig challenge problem: trig values & side ratios
Learn
Sine & cosine of complementary anglesUsing complementary anglesTrig word problem: complementary angles
Learn
Solving for a side with the law of sinesSolving for an angle with the law of sinesProof of the law of sines
Practice
Solve triangles using the law of sinesGet 3 of 4 questions to level up!
Learn
Solving for a side with the law of cosinesSolving for an angle with the law of cosinesProof of the law of cosines
Practice
Solve triangles using the law of cosinesGet 3 of 4 questions to level up!
Learn
Trig word problem: starsLaws of sines and cosines review
Practice
General triangle word problemsGet 3 of 4 questions to level up!