Curated Video
Identifying Congruent Figures
In this video, students will learn how to identify congruent figures by comparing their segments and angles. They will understand that congruent means having the same length, measure, or size. The video explains the symbol used to...
Math Fortress
Geometry: Introduction to Geometry (Level 3 of 7)
This video continues introducing the basic building blocks for the successful study of geometry. This video goes over 5 examples covering the appropriate way to denote and name angles formed by points on a geometric figure.
Brian McLogan
What is the formula for component form of a vector
in this video series I will show you how to find the angle of a vector when given in component form or as a linear combination. To understand the direction of a vector it is important to go back to the unit circle and determine how we...
Curated Video
Understanding the Relationship Between Acute Angles in a Right Triangle
In this video, we explore how to efficiently find the measure of one acute angle in a right triangle. We learn that the size of the angles in a right triangle is based on the length of the sides, and that the acute angles co-vary or...
Curated Video
Trigonometric Functions and Reference Angles in All Four Quadrants
In this video, the teacher explains how to find the exact value of the sine of 120 degrees without using a calculator. They introduce the concept of reference angles and how they can be used to determine the trigonometric ratios for...
Curated Video
Using Similarity Criteria to Find the Distance Across a Canyon
In this lesson, students learn how to solve real-world problems involving similarity criteria. Using the example of finding the distance across a canyon, they apply the vertical angle theorem and angle-angle similarity postulate to...
Curated Video
Prove the Pythagorean Theorem: using similar triangles
In this lesson you will learn how to prove the Pythagorean Theorem by using similar triangles.
Curated Video
Understanding the Signs of Trigonometric Functions in Quadrants
This video explains the proper signs of trigonometric functions by determining the signs of x and y in all four quadrants. It also introduces the concept of reciprocal trig functions and emphasizes the importance of understanding the...
Curated Video
Measuring Angles in Standard Position on the Coordinate Plane
In this video, you will learn how to measure angles in standard position by placing them correctly in the coordinate plane. You will also understand the concept of negative angle measures and coterminal angles.
Math Fortress
Calculus III: The Dot Product (Level 10 of 12)
This video goes over the dot product also known as the scalar product. This video covers direction angles and direction cosines. 3 examples are also covered illustrating how to solve problems involving direction angles and direction...
Curated Video
How to Write Equations Using Vertical Angles
This video is a math lesson about how to write equations to solve vertical angle problems. The instructor explains what vertical angles are and how to identify them, and provides examples of how to write equations using the information...
Weatherthings
Weather Things: Coronas
A blue sky and fluffy bright clouds are things that are seen around the world. The atmosphere presents a multitude of sights and phenomena using light, air, water droplets, ice crystals, and dust. Many of the phenomena give clues to...
Brian McLogan
Solve trigonometric equation with sine and tangent
👉 Learn how to solve trigonometric equations by factoring out the GCF. When solving trigonometric equations involving the multiples of the same trigonometric function. It is very useful to collect similar trigonometric functions together...
Curated Video
Measuring Angles Using Fractions of a Circle
This video lesson teaches students how to measure angles using fractions of a circle. It explains the concept of angles and right angles, and demonstrates how to use a sprinkler on a field to visualize and calculate angle measurements....
Brian McLogan
Find the point on the unit circle given an angle
👉 Learn how to find the point on the unit circle given the angle of the point. A unit circle is a circle whose radius is 1. Given an angle in radians, to find the coordinate of points on the unit circle made by the given angle with the...
Curated Video
Identifying Angles: Comparing to Square Angles
In this video, the teacher explains how to identify different types of angles by comparing them to square angles. The lesson covers acute angles, obtuse angles, right angles, and straight angles, providing examples and visuals to help...
Brian McLogan
Evaluating the difference of two angles for the cosine function
👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...
Cerebellum
Geometry, Perimeter and Area
This video covers exam strategy, Geometry, Perimeter, Area, Angles, Circles. This is part 14 from the series 'Introduction to the Math Section of the SAT'.
Schooling Online
English Essentials - Flying Through Film - Cinematography (Stage 5, Years/Grades 9-10)
In this second lesson, we’ll fly through the world of cinematography. Filmmakers use an assortment of techniques, including shots, angles, camera movements and focus to influence viewers’ emotions. We’ve modelled analysis of iconic...
3D Print General
Transparent 3D Prints
In this video, I test out a way to make your 3D prints completely clear. Not translucent - but actually transparent.
Virtually Passed
Relative motion problem
For the graphical method: 1) Draw Geometry 2) Analyse the component of the system you know the most about using Va/b = Va - Vb 3) Analyse all the components (keeping track of both magnitudes and directions of vectors) 4) When you've got...
Curated Video
Finding Missing Measures in Triangles
In this video, the teacher explains how to find missing measures in triangles using congruence and similarity criteria. They cover different congruence criteria, such as side-side-side and angle-side-angle, as well as similarity criteria...
Curated Video
Describing Cross-Sections of a Right Rectangular Pyramid
In this video, students learn how to describe the cross-sections of a right rectangular pyramid by slicing at different angles. They are introduced to the concept of cross-sections and how they result from cutting a 3-dimensional shape...
Curated Video
Estimating Angle Measurements Using Visual Clues
In this video, the teacher explains how to estimate the measure of angles using visual clues and benchmark angles. They give examples of estimating the angle of a plane's takeoff, the opening angle of a door, and the angle formed by bike...