Brian McLogan
How to apply sine to find the missing side 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...
Brian McLogan
What is the SAS Congruence Theorem for Triangles - Congruent Triangles
👉 Learn about congruent triangles theorems. Two or more triangles (or polygons) are said to be congruent if they have the same shape and size. There are many methods to determine whether two triangles are congruent. Some of the methods...
Brian McLogan
How to Determine if an Angle is Included or Not - Congruent Triangles
👉 Learn about the included angles of a triangle. An included angle of a triangle is the angle between two sides of a triangle. An included side of a triangle is the side between two angles. To show that two triangles are congruent by the...
Brian McLogan
Given two congruent arcs determine the value of your central angle
Learn how to solve problems with arcs of a circle. An arc is a curve made by two points on the circumference of a circle. The measure of an arc corresponds to the central angle made by the two radii from the center of the circle to the...
Brian McLogan
Using binomial expansion to expand a binomial to the fourth power
👉 Learn how to expand a binomial using binomial expansion. A binomial expression is an algebraic expression with two terms. When a binomial expression is raised to a positive integer exponent, we usually use the binomial expansion...
Brian McLogan
Use binomial expansion to determine the 3rd term
👉 Learn how to find the given term of a binomial expansion. A binomial expression is an algebraic expression with two terms. When a binomial expression is raised to a positive integer exponent, we usually use the binomial expansion...
Brian McLogan
How to find the height of a tree given the angle of elevation
👉 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...
Brian McLogan
How to evaluate for sine of 60 degrees using special right triangles
👉 Learn how to evaluate trigonometric functions using the special right triangles. A right triangle is a triangle with 90 degrees as one of its angles. A special right triangle is a right triangle with the angles 30, 60, 90 degrees or...
Brian McLogan
Rewriting a number in radians in degrees using the conversion ratio
👉 Learn how to convert angles from radians to degrees. Recall that pi radians is equivalent to 180 degrees. Thus, when given an angle in radians, to convert the angle to degrees we multiply the given angle radians by the ratio 180/pi.
Brian McLogan
Use two triangles to evaluate the tangent sum formula
👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...
Brian McLogan
How to apply the sum of angles with the sine of an angle not on unit circle
👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...
Brian McLogan
Evaluate the half angle for cosine from 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...
Curated Video
Using the Pythagorean Theorem with a Rectangle
In this short math video we will answer a standardized math test question where we are asked to find the length of the diagonal of a rectangle. We will review that the four angles of any rectangle are 90 degrees. So, the diagonal forms a...
Brian McLogan
Determine the sides of a triangle produce an acute, obtuse or right triangle
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
Finding the height of a rhombus using pythagorean theorem
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...
Math Fortress
Calculus III: The Dot Product (Level 5 of 12)
This video goes over the dot product also known as the scalar product. This video goes over a proof for the geometric definition of the dot product. This video also goes over 4 examples illustrating how to find the angle between two...
Let's Tute
Midpoint Theorem
In this session we will learn the Midpoint Theorem with the help of 3 steps
Virtually Passed
Dot product and angle between two vectors proof
The angle between two vectors can be found by using the cosine rule in a clever way.
Let's Tute
Origami Phoenix Bird
In this video, the teacher demonstrates how to create an origami phoenix bird. The step-by-step instructions guide viewers through the folding process, starting with a simple origami crane and progressing to the more intricate phoenix...
Let's Tute
DIY Paper Star Tutorial: How to Make a Beautiful Handmade Star
In this video, the teacher demonstrates how to make a star using handmade paper. The step-by-step instructions are clear and easy to follow, making it a fun and creative activity for anyone.
Brian McLogan
What is sohcahtoa
👉 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
Learn how to classify a triangle based on the number of sides ex 1
👉 Learn how to classify triangles. A triangle is a polygon with three sides. Triangles are classified on the basis of its angles or on the basis of its side lengths. The classification of triangles on the bases of its angles are: acute,...
Brian McLogan
Classifying triangles by the measure of their sides
👉 Learn all about classifying triangles. A triangle is a closed figure with three sides. A triangle can be classified based on the length of the sides or based on the measure of the angles. To classify a triangle based on the length of...
Brian McLogan
How to determine the missing value of a triangle using sine
👉 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...