Brian McLogan
How do you determine two triangles are similar using angle angle aa
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Science360
Fishy business
In episode 47, Jordan and Charlie explore how scientists at the University of Texas at Austin have solved the longstanding mystery about how some fish “disappear” from their predators. A fish’s ability to go invisible in polarized light...
Curated Video
Door Opening (Identify measurements of special types of angles (e.g. right angles, straight angles, zero angles, acute and obtuse angles))
What does the shape between the door and its edge remind you of?
Curated Video
Find the Missing Angle
In this short video we will answer a standardized math test question where we are asked to find the missing angle. We will be presented with three intersecting lines that form a triangle. We will be asked to find the missing angle. We...
National Parks Service
Yosemite Nature Notes 4: Half Dome
The granite monolith of Half Dome is recognized throughout the world as an icon of Yosemite National Park. Thousands of visitors hike to the summit each year, rewarded with spectacular views and an experience that is not easily forgotten.
Brian McLogan
Solving for an inteior angle given one interior angle and exterior angle in two ways ex 8
👉 Learn how to solve for an unknown variable in the exterior angle of a polygon. The exterior angle of a polygon is the angle between a side of the polygon and an outward extension of the adjacent side. The sum of the exterior angles of...
Brian McLogan
Using Alternate exterior angles to prove two lines are parallel
I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exaclty how...
Brian McLogan
Using supplementary angles to find the missing value
👉 Learn how to find the value of an unknown variable in the expressions representing the values of angles given the relationship between the angles. When given expressions representing the values of angles and the relationship between...
Brian McLogan
Solve for your missing variable given two angles that are a linear pair
👉 Learn how to find the value of an unknown variable in the expressions representing the values of angles given the relationship between the angles. When given expressions representing the values of angles and the relationship between...
Brian McLogan
Learn how to classify your four major angles
👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles,...
Brian McLogan
How to find the measure of three angles that are supplementary
👉 Learn how to find the value of an unknown variable in the expressions representing the values of angles given the relationship between the angles. When given expressions representing the values of angles and the relationship between...
Brian McLogan
How to solve a trigonometric equation with tangent
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric identities, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a...
Brian McLogan
How to evaluate using the sum of two angles for sine
👉 Learn how to evaluate the sine of an angle in radians using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the...
Brian McLogan
Applying the sum of two angles tangent formula
👉 Learn how to evaluate the tangent of an angle in degrees using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the...
Brian McLogan
Solving an equation with multiple angles between 0 and 2pi
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a...
Brian McLogan
How to use the law of sines when given two angles and one side
👉 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
Evaluate using the sum formula of two angles of cosine
👉 Learn how to evaluate the cosine of an angle in radians using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the...
Brian McLogan
Evaluate for the sine of an angle using the sum of two angles
👉 Learn all about sum and difference angle identities. In this video playlist, you will learn how to evaluate, solve, simplify and verify using sum and difference angle identities. We will evaluate using angles not found on the unit...
Brian McLogan
Solving trigonometric equations
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include factoring out the GCF and simplifying the factored equation. Another method is to use a...
Brian McLogan
Solving trigonometric equations with multiple angles
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a...
Brian McLogan
How do we determine when there is one or two cases for the law of sines
👉 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 and...
Brian McLogan
Find the solutions to a trigonometric equation by factoring
👉 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
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Polygon 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
Sum and Difference Formula Evaluate Right Triangles
Sum and Difference Formula Evaluate Right Triangles