TED-Ed
TED-ED: How many ways are there to prove the Pythagorean theorem? - Betty Fei
What do Euclid, 12-year-old Einstein, and American President James Garfield have in common? They all came up with elegant proofs for the famous Pythagorean theorem, one of the most fundamental rules of geometry and the basis for...
Curated Video
Distance to the Sun and Moon
What are the trigonometric functions and how did the sine function allow Indian astronomers to prove that the Sun was 400 times farther from Earth than the Moon? Maths - Shape A Twig Math Film. Reinforce and extend the learning required...
Curated Video
Proving Pythagoras
Understand how Pythagoras's Theorem is applied, why it holds true, and how we know that Pythagoras did not, in fact, discover it. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s...
Curated Video
Using the Converse of the Pythagorean Theorem
In this math video we will solve a math problem using the converse of the Pythagorean Theorem. We will understand the if the longest side of a triangle squared is equal to the sum of each square of the remaining two sides, then the...
Curated Video
Distance in the Coordinate Plane
In this math video we will find distance in the coordinate plane. We will understand that we can create a right triangle using a coordinate plane. We will also understand that the Pythagorean Theorem applies to any right triangle and is...
Curated Video
Using Pythagorean Theorem in the Real World
In this math video we will be using the Pythagorean Theorem to solve a real world problem. We will understand that the Pythagorean Theorem applies to any right triangle. We will identify the legs and hypotenuse of a right triangle. We...
Curated Video
Missing Side of a Right Triangle
In this math video we will determine the possible lengths of the missing side of a right triangle. We will be given two side lengths and asked to determine two possible lengths for the third side. We will understand that the Pythagorean...
Curated Video
Pythagoras’ Theorem Explained
Pythagoras' Theorem Explanation: This video is an introduction lesson for Pythagoras' Theorem. Why is it useful to know Pythagoras' Theorem? What is a hypotenuse? Watch this video to find out. Practice questions and answers are at the...
Curated Video
GCSE Maths - Pythagoras' Theorem And How To Use It #120
This video covers how to use Pythagoras' Theorem, which helps us to find the length of a missing side in a right-angle triangle. This video is suitable for maths courses around the world. KS3 - All on your course GCSE Foundation - All on...
Curated Video
GCSE Maths - Congruent Triangle Rules #103
This video explains how to tell whether 2 triangles are congruent using 4 rules: SSS, SAS, AAS, RHS. This video is suitable for maths courses around the world. KS3 - Not on your course GCSE Foundation - All on your course GCSE Higher -...
Curated Video
Common Types of Triangles
Mr. Addit defines the terms; right triangle, hypotenuse, legs, equilateral, equiangular, isosceles, scalene, equiangular, obtuse, and acute.
Brian McLogan
Quick Special Right Triangles Review
In this video we are going to explore how to find the missing measures of a right triangle using special right triangles ⭐️ Quick Pythagorean Triple Review - • Quick Pythagorean Triple Review ⭐️ Quick Trigonometric Functions Review - •...
Curated Video
Pythagorean Theorem
"Pythagorean Theorem" will show that the area of two squares (sides A and B) equals the area of square (side C).
Curated Video
Use Pythagorean Theorem to Create an Equation
In this video, the Pythagorean Theorem is explained and applied to solve a real-world problem involving a ladder leaning against a building. The viewer is guided through the process of creating an equation using the given measurements...
Curated Video
Finding Acute Angles in Right Triangles Using Inverse Tangent Function
In this video, the teacher explains how to find the measure of an acute angle in a right triangle when only the side lengths are known. They introduce the concept of trigonometric ratios (sine, cosine, and tangent) and explain how to use...
Curated Video
Solving for X in Right Triangles using the Sine Ratio
In this video, we learn about solving for X in triangles using the sine ratio. By comparing the ratios of the length of the side opposite an acute angle to the length of the hypotenuse in right triangles, we can determine the value of X....
Curated Video
Finding Acute Angle Measures in Right Triangles using Inverse Sine Function
In this video, you will learn how to find the measure of an acute angle in a right triangle using the inverse sine function. The video explains the ratios of side lengths for the trigonometric functions and introduces the concept of...
Curated Video
Finding Trigonometric Coordinates for the 45-Degree Angle on the Unit Circle
In this video, students learn how to find the coordinates of the 45-degree angle on the unit circle by using properties of special right triangles. The video explains the concept of isosceles right triangles and how they relate to the...
Curated Video
Finding Acute Angle Measures in Right Triangles Using Inverse Cosine
This video explains how to find the measure of an acute angle in a right triangle when only the side lengths are known. It introduces the concept of inverse trigonometric functions, specifically the inverse cosine function, to determine...
Flipping Physics
Nerd-A-Pult - Measuring Initial Velocity
We need to know the initial velocity of a projectile leaving the Nerd-A-Pult. That means we need the initial speed and the initial angle. This video shows exactly how I measured both.
Brian McLogan
How solve a problem with changing angle for related rates
👉 Learn how to take the derivative of a function. Learn how to find the derivative of a function using the chain rule. The derivative of a function, y = f(x), is the measure of the rate of change of the function, y, with respect to the...
Curated Video
Finding Heights and Lengths Using the Pythagorean Theorem
In this video, the teacher explains how to find the height of a building and the length of a television using the Pythagorean theorem. They review the formulas for the theorem and demonstrate how to round square roots to the nearest...
Curated Video
Angles of Elevation and Depression: Finding the Height of a Flagpole
In this video, students will learn how to use trigonometric ratios to find the height of a flagpole. The lesson covers angles of elevation and depression, as well as the different trigonometric ratios. The video provides a step-by-step...
Curated Video
Finding Lengths in Right Triangles: Introducing the Secant Ratio
In this video, the teacher explains how to find the length of segment DG in a right triangle without using the cosine ratio. Instead, they introduce the secant ratio, which compares the length of the hypotenuse to the length of the leg...