Brian McLogan
Introduction to rationalizing the denominator to simplify a radical expression
👉 Learn how to divide rational expressions with a radical in the denominator. To divide rational expressions with a radical in the denominator, we rationalize the denominator by multiplying both the numerator and denominator by the...
Curated Video
Proportions
In this video lesson we will learn how to write and solve a proportion. We will use a proportion to determine if two ratios are equal. We will learn that if two ratios form a proportion there is a proportional relationship. We will solve...
Brian McLogan
What is the cosine function
👉 Learn how to evaluate the six trigonometric functions given a point. When given a point, there are many ways to evaluate the trigonometric functions of the point. The methods include: using the unit circle if the point is a point on...
Brian McLogan
Using the law of sines to solve a triangle with SSA - One Triangle
👉 Learn how to determine if a given SSA triangle has 1, 2 or no possible triangles. Given two adjacent side lengths and an angle opposite one of them (SSA or ASS), then there are 3 possible cases: there can be 1 solution, 2 solutions,...
Curated Video
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Similar Shapes - 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: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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...
Brian McLogan
Determining the sum of a geometric sum when there is no sum
👉 Learn how to find the geometric sum of a series. A series is the sum of the terms of a sequence. A geometric series is the sum of the terms of a geometric sequence. The formula for the sum of n terms of a geometric sequence is given by...
Curated Video
Graphs of Proportional Relationships and Constant of Proportionality
In this video, the teacher explains how to identify proportional relationships in tables and graphs, and how to determine the constant of proportionality. The lesson includes examples and step-by-step instructions for finding the...
Curated Video
Finding the Centroid of a Triangle Using Vector Geometry and Coordinate Points
The video is a lecture presentation on vector geometry and the ratio theorem, with a focus on the centroid of a triangle. The presenter explains the concept of a centroid, which is the point of concurrency of a triangle formed by the...
Professor Dave Explains
IIT/JEE Chemistry Practice #6: Stoichiometry/Precipitation Reactions
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Brian McLogan
Using a set of points to determine if two triangles are similar to each other
👉 Learn how to determine whether two triangles are similar given the coordinate points of the vertices of the triangle. Two triangles are said to be equal when the corresponding angles of the triangles are congruent (equal) or when the...
Brian McLogan
Showing two triangles are similar when they overlay each other using SAS
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
Curated Video
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - 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
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...
Brian McLogan
Converting degrees to radians - Math tutor online tutorial
👉 Learn how to convert angles from degrees to radians. Recall that pi radians are equivalent to 180 degrees. Thus, when given an angle in degrees, to convert the angle to radians we multiply the given angle radians by the ratio pi/180.
Brian McLogan
Sketch a triangle given a trig angle then determine remaining trig functions of angle
👉 Learn how to evaluate the six trigonometric functions given the value of one of the trigonometric functions. When given the value of one of the trigonometric functions of an angle, we can evaluate the values of the other trigonometric...
Brian McLogan
What is the period of tangent and cotangent
👉 Learn the basics of graphing a tangent and a cotangent function. To plot the tangent and the cotangent graph we choose a set of points and form a table of values with which we plot the points on the x-y coordinate axis to obtain the...