Right triangles and trigonometry | Geometry | Khan Academy (English)

   Sunday, June 20, 2021   

Starting a new Lecture Notes Series on Right triangles and trigonometry | Geometry | Khan Academy

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Right triangles and trigonometry | Geometry | Khan Academy
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Lecture Description of this above Topic:

Lecture 1: Bhaskara's proof of the Pythagorean theorem

Lecture 2: The Pythagorean theorem intro

Lecture 3: Pythagorean theorem

Lecture 4: Showing relationship between cosine and sine of complements

Lecture 5: Example relating trig function to side ratios

Lecture 6: Garfield's proof of the Pythagorean theorem

Lecture 7: Basic trigonometry II

Lecture 8: Example: Using soh cah toa

Lecture 9: Pythagorean theorem 1

Lecture 10: Basic trigonometry

Lecture 11: Pythagorean theorem proof using similarity

Lecture 12: Area of a regular hexagon

Lecture 13: 45-45-90 triangle side ratios

Lecture 14: Pythagorean theorem 2

Lecture 15: Similarity to define sine, cosine, and tangent

Lecture 16: Intro to 30-60-90 triangles

Lecture 17: 30-60-90 triangle side ratios proof

Lecture 18: Pythagorean theorem 3

Lecture 19: Example with trig functions and ratios

Lecture 20: How much of a pyramid is submerged

Lecture 21: Angle to aim to get alien

Lecture 22: 30-60-90 triangle example problem

Lecture 23: Example: Trig to solve the sides and angles of a right triangle

Lecture 24: Pythagorean theorem II

Lecture 25: Another Pythagorean theorem proof

Lecture 26: Introduction to the Pythagorean theorem

Lecture 27: 45-45-90 triangles

Lecture 28: Sine and cosine of complements example