Brian McLogan
What are the points on a unit circle by 45 degrees
👉 Learn about the points on the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle...
Brian McLogan
How does the pythagorean inequality theorem prove obtuse triangles
Learn about the Pythagorean theorem. The Pythagoras theorem is a fundamental relation among the three sides of a right triangle. It is used to determine the missing length of a right triangle. The Pythagoras theorem states that the...
Brian McLogan
How to label an oblique triangle
👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...
Brian McLogan
How do we determine the relationships of a 45 45 90 triangle
👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right triangle enables us to solve for any...
Brian McLogan
Evaluating the composition of Functions using Right Triangles
👉 Learn how to evaluate an expression with the composition of a function and a function inverse. Just like every other mathematical operation, when given a composition of a trigonometric function and an inverse trigonometric function,...
Brian McLogan
What is the sum of interior angles for a nonagon
👉 Learn how to determine the sum of interior angles of a polygon. A polygon is a plane shape bounded by a finite chain of straight lines. A regular polygon is a polygon whose sides are congruent (equal). The interior angle of a polygon...
Curated Video
Understanding Scale Factors in Architectural Design
In this lesson, students will learn how architects use scale factors to draw designs with correct dimensions. They will understand the concept of ratios and how to write them in different formats.
Curated Video
GCSE Secondary Maths Age 13-17 - Algebra: Cosine Rule - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
FuseSchool
Introduction To SOHCAHTOA
Triangles are the building blocks of all other straight-edged shapes. They were used for hundreds of years to create accurate maps and GPS today still works using trigonometry. Even the pixels on phones and screens use trigonometry.We...
FuseSchool
Area Of A Triangle 1/2absinC
The area of a triangle is ½ the base X perpendicular height. If we don’t have the perpendicular height, there is another formula we can use: 1/2absinC which we look at in this video. We need two sides and the angle in between. This will...
Let's Tute
Circle Theorems: 12 Theorems Based on Circles
Circle Theorems part 2/3: The teacher in the video explains and proves 9 out of 12 theorems related to circles, using basic concepts and properties of triangles. The theorems include equal chords of a circle, angles subtended by an arc...
Let's Tute
Basic Proportionality Theorem - Thales Theorem
This video explains about Basic Proportionality Theorem with the help of an activity .
FuseSchool
Sine Or Cosine Rule?
Not every triangle is a right-angle triangle, so we can't always use Pythagoras and SOHCAHTOA to find missing sides and missing angles. We instead use the sine rule or the cosine rule. They can both be used to find either missing sides...
Brian McLogan
Determine points on a unit circle using special triangles
👉 Learn about the points on the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle...
Curated Video
GCSE Secondary Maths Age 13-17 - Shapes & Area: Proportion - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Formulas and Expressions - Explained
SchoolOnline's Primary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 9-13, they cover every key topic and sub topic covered in Maths in clear and easy to follow steps. This video looks at...
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Density, Mass, Volume - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
KnowMo
Introduction to the Sine Rule in Trigonometry
The Sine This video is a lecture on the sine rule in trigonometry, focusing on how to use it to solve problems involving non-right-angled triangles. The video begins with an overview of trigonometry and the important ratios sine, cosine,...
Curated Video
GCSE Secondary Maths Age 13-17 - Pythagoras & Trigonometry: 3D Trigonometry - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Brian McLogan
Given a ratio of angles for a triangle find the actual measurement
👉 Learn how to solve with the ratio of sides and angles of a triangle. Given the ratio of the sides of a triangle and the perimeter of the triangle, we can solve for the actual lengths of the triangle. Similarly, when the ratio of the...
Brian McLogan
How to determine the angle of elevation and angle of depression
👉 Learn how to solve word problems with triangles. A word problem is a real-life situation which can be modelled mathematically. Word problems involving angles of elevation and depression, straight object leaning against a vertical...
Weird History
The History of Doritos
Doritos history? I'll have a bag...Weird History Food is going to get your fingers nice and sticky red on this one because we're talking all about the history of one of the most beloved chips: Doritos. Weird History Food will take you...
Brian McLogan
Learn how to determine the angle of elevation and angle of depression
👉 Learn how to solve word problems with triangles. A word problem is a real-life situation which can be modelled mathematically. Word problems involving angles of elevation and depression, straight object leaning against a vertical...