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

Garfield's proof of the Pythagorean theoremBhaskara's proof of the Pythagorean theoremPythagorean theorem proof using similarityAnother Pythagorean theorem proof

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

Intro to the trigonometric ratiosTrigonometric ratios in right trianglesHypotenuse, opposite, and adjacentTrigonometric ratios in right triangles

Solving for a side in right triangles with trigonometrySolving for a side in right triangles with trigonometry

Intro to inverse trig functions

Right triangle word problemAngles of elevation and depressionRight triangle trigonometry review

Triangle similarity & the trigonometric ratiosTrig challenge problem: verify identitiesTrig challenge problem: trig values & side ratios

Sine & cosine of complementary anglesUsing complementary anglesTrig word problem: complementary angles

Solving for a side with the law of sinesSolving for an angle with the law of sinesProof of the law of sines

Solving for a side with the law of cosinesSolving for an angle with the law of cosinesProof of the law of cosines

Trig word problem: starsLaws of sines and cosines review