Khan Academy

Pythagorean theorem example (K-A)

Pythagorean theorem II (K-A)

Pythagorean theorem word problem: carpet (K-A)

Pythagorean theorem word problem: fishing boat (K-A)

Another Pythagorean theorem proof (K-A)

Bhaskara's proof of the Pythagorean theorem (K-A)

Garfield's proof of the Pythagorean theorem (K-A)

Pythagorean theorem proof using similarity (K-A)

30-60-90 triangle example problem (K-A)

Area of a regular hexagon (K-A)

Special right triangles intro (part 1) (K-A)

Special right triangles intro (part 2) (K-A)

Special right triangles proof (part 1) (K-A)

Special right triangles proof (part 2) (K-A)

Special right triangles review (K-A)

Hypotenuse, opposite, and adjacent (K-A)

Intro to the trigonometric ratios (K-A)

Trigonometric ratios in right triangles Notes (K-A)

Trigonometric ratios in right triangles Video (K-A)

Solving for a side in right triangles with trigonometry Notes (K-A)

Solving for a side in right triangles with trigonometry Video (K-A)

Intro to inverse trig functions (K-A)

Angles of elevation and depression (K-A)

Right triangle trigonometry review (K-A)

Right triangle word problem (K-A)