Right triangles & trigonometry videos

Pythagorean theorem in 3D

Pythagorean theorem with isosceles triangle

Multi-step word problem with Pythagorean theorem

Garfield's proof of the Pythagorean theorem

Another Pythagorean theorem proof

Pythagorean theorem proof using similarity

Bhaskara's proof of the Pythagorean theorem

Special right triangles proof (part 1)

30-60-90 triangle example problem

Area of a regular hexagon

Special right triangles proof (part 2)

Using similarity to estimate ratio between side lengths

Using right triangle ratios to approximate angle measure

Triangle similarity & the trigonometric ratios

Trigonometric ratios in right triangles

Solving for a side in right triangles with trigonometry

Trig word problem: complementary angles

Using complementary angles

Sine & cosine of complementary angles

Trig challenge problem: trig values & side ratios

Right triangle word problem