Brian McLogan
What is a scalene triangle
👉 Learn the essential definitions of triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of their angles or on the basis of their side lengths. The classification of triangles on the bases of their...
Brian McLogan
How to use a 45 45 90 special right triangle to determine the sides of a 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
Use special right triangles to determine the height to find the area of a parallelogram
👉 Learn all about Area and Perimeter. In this playlist, we will explore how to determine the area and perimeter of 2-dimensional figures. We will also look into combinations of figures. The focus will be on rectangles, squares,...
Curated Video
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Area of a Circle - Problem - 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
Evaluate the trig function and inverse function
👉 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,...
FuseSchool
SOHCAHTOA - Finding Missing Sides PART 1
In this video we will discover how to find the missing side of a right angle triangle using SOHCAHTOA. You should already know which side is the opposite, adjacent and hypotenuse. Sin, cos and tan are ratios between the lengths of sides...
Brian McLogan
How to use the half angle of cosine when given a triangle
👉 Learn how to evaluate the tangent of a half-angle. When given the value of the tangent of an angle, we can evaluate the tangent of half the angle using the tangent half-angle formula. When the value of any other trigonometric function...
Brian McLogan
How to determine the height of a triangle when given the area
👉 Learn how to find the area and perimeter of triangles. A triangle is a shape of three sides. The area of a shape is the measure of the portion enclosed by the shape while the perimeter of a shape is the measure of the outline enclosing...
Curated Video
Introduction to the Cosine Rule for Finding Missing Lengths and Angles in Triangles
The video is a tutorial on the cosine rule, a mathematical formula used to find missing side lengths and angles in triangles, particularly for non-right-angled triangles. The video highlights the difference between the cosine rule and...
Curated Video
Finding the Perimeter of Two-Dimensional Figures on the Coordinate Plane
In this video, the teacher explains how to find the perimeter of two-dimensional figures on the coordinate plane. They review the Pythagorean theorem and emphasize the importance of adding all the sides together to find the perimeter of...
Brian McLogan
How to write the three trigonometric ratios for a triangle
👉 Learn all about the trigonometry of right triangles. A right triangle is a triangle that has 90 degrees as one of its angles. The trigonometric identities of right triangles give us the relationship between the angles of a right...
Brian McLogan
Using inverse trig properties to solve word problems - Math help
👉 Learn how to solve the word problems with trigonometry. Word problems involving angles, including but not limited to: bearings, angle of elevations and depressions, triangles problems etc are solved using trigonometry. To be able to...
Curated Video
The Infinite Chocolate Trick
Learn all about the infinite chocolate trick, a popular internet phenomenon. By making strategic cuts and rearranging the pieces, the illusion of an unlimited supply of chocolate is created. The video explains the mathematical and visual...
Curated Video
GCSE Secondary Maths Age 13-17 - Algebra: Pythagorous Theorem - 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
What is inverse trig and how does it relate to what we know
👉 Learn how to evaluate inverse trigonometric functions. When an angle is unknown but the value of one of the trigonometric functions of the angle is known, we can evaluate the value of the angle using the inverse trigonometric function...
Brian McLogan
Review how to evaluate our trig functions when given an angle
Learn how to solve trigonometric function problems using the unit circle. The trigonometric functions of an angle is the value of the trigonometric functions of sine, cosine, tangent, cosecant, secant and cotangent of that angle. To use...
Brian McLogan
Given Sine, evaluate the half angle of cosine
👉 Learn how to evaluate the tangent of a half-angle. When given the value of the tangent of an angle, we can evaluate the tangent of half the angle using the tangent half-angle formula. When the value of any other trigonometric function...
Brian McLogan
Master solving word problems using inverse trigonometry
Master solving word problems using inverse trigonometry
Curated Video
Drawing Trigonometric Graphs Using the Unit Circle
This video is a lecture on how to draw trigonometric graphs using the unit circle. The lecturer explains how to visualize sine, cosine, and tangent graphs by examining the relationships of the trigonometric ratios with the sides of right...
Brian McLogan
Understand the different ways we understand the sine function
👉 Learn all about evaluating trigonometric functions with triangles. In this playlist, we will learn how to evaluate, sine, cosine, tangent, cotangent, secant, and cosecant when given the sides of a triangle. If we have missing sides we...
Brian McLogan
Using special right triangles to determine the missing values of a 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
How to use the inverse cosine function to find the missing angle of a triangle
👉 Learn how to find a missing angle of a right triangle. A right triangle is a triangle that has 90 degrees as one of its angles. The trigonometric identities of right triangles gives us the relationship between the angles of a right...
Brian McLogan
Given a point find the six trigonometric functions of the angle
👉 Learn all about evaluating trigonometric functions with triangles. In this playlist, we will learn how to evaluate, sine, cosine, tangent, cotangent, secant, and cosecant when given the sides of a triangle. If we have missing sides we...