Brian McLogan
Learn where the formula for the Law of Sines comes from
👉 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
Learn to determine when there is 1, 2 or no 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,...
Brian McLogan
Solve a rational equation with no extraneous solutions
Solve a rational equation with no extraneous solutions
Brian McLogan
Using tangent to find the missing length of a triangle
👉 Learn how to find a missing side length 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 give us the relationship between the angles of a...
Curated Video
Locate a Square Root on a Number Line
In this video, a math teacher guides viewers through a standardized test question that involves identifying the location of a square root on a number line.
Catalyst University
Interpreting an Electrophoretogram (from Electrophoresis)
Interpreting an Electrophoretogram (from Electrophoresis)
Curated Video
GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Speed, Distance, Time - 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...
Brian McLogan
Evaluate for Theta Between 0 and 2pi
👉 Learn how to evaluate the inverse of reciprocal trigonometric functions. Recall that the reciprocal trigonometric functions are given by the ratio of 1 and the corresponding trigonometric function. When an angle is unknown but the...
Brian McLogan
Tutorial-Solve a proportion when the variable is in denominator and numerator ex 16, (3+2x)/(3–2x)=3
Tutorial-Solve a proportion when the variable is in denominator and numerator ex 16, (3+2x)/(3–2x)=3
Brian McLogan
Solving a rational Equation
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Curated Video
Multiplication as Resizing (Part 1)
Interpreting multiplication as resizing with a scale factor greater than, less than or equal to 1.
Curated Video
Ratio Relationships in the Real World
In this short video we will answer a standardized math test question about a ratio relationship in the real world. We will first use a drawing to visualize the ratio relationship. We will then use our drawing to determine if the given...
Curated Video
Constant of Proportionality
Identify the constant of proportionality when given a table or a graph.
Curated Video
Factors Affecting the Rate of Reaction
The video discusses the factors that affect the rate of chemical reactions. The first factor is the number of collisions with enough energy to react. Other factors include changing the pressure, concentration, surface area, and...
Let's Tute
Real Numbers: Irrational Numbers
In this video, the teacher explains the concept of rational and irrational numbers, and how to identify them using examples of integers, terminating decimals, and non-terminating repeating decimals. The teacher also shows how to prove...
Brian McLogan
Evaluate the six trigonometric functions for a value and constraint
👉 Learn how to evaluate the six trigonometric functions given some constraints. When given the value of one trigonometric function, we can use a right triangle with one of its legs on the x-axis and the other leg, perpendicular to the...
Brian McLogan
What is the sine 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
Evaluate the Inverse Tan of Negative One
👉 Learn how to evaluate the inverse of reciprocal trigonometric functions. Recall that the reciprocal trigonometric functions are given by the ratio of 1 and the corresponding trigonometric function. When an angle is unknown but the...
Brian McLogan
Ambiguous case, law of sines, two triangles
👉 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,...
Brian McLogan
Master how to determine theta in radians when given arc length and the radius
Master how to determine theta in radians when given arc length and the radius
Professor Dave Explains
Elemental Analysis: Empirical and Molecular Formulas
There's a thing with carbon and hydrogen in it. But how many of each?! That's the kind of thing a chemist should know. So let's do some elemental analysis!
FuseSchool
Theoretical Yield & Losses
What are Theoretical yield and losses? This is an important concept within Chemistry. In this video we will discover this answer together!
Catalyst University
Kinetics: The Pre-Equilibrium Approximation
Kinetics: The Pre-Equilibrium Approximation