Brian McLogan
Given a line tangent to a circle find the value of x
Learn how to solve problems with tangent line. A tangent line to a circle is a line that touches the circle at exactly one point. The tangent line to a circle makes a right angle with the radius of the circle at the point of its...
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...
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
Trigonometry | Preparing for Precalculus Part 6
Trigonometry | Preparing for Precalculus Part 6
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...
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
Applying the law of cosines to a triangle to find the missing length
Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The law of cosines is used in determining the lengths of the sides or the measures of the angles of a triangle when no...
Curated Video
The Pythagorean Theorem: See a Proof and Learn How to Use the Theorem
During this video lesson, students will be introduced to the Pythagorean Theorem which is read a squared plus b squared equals c squared. Students will learn key vocabulary and how to identify the legs and hypotenuse of a right triangle....
Brian McLogan
Writing a proof for equiangular angles within each other
👉 Learn how to write a proof given a triangle. A triangle is a polygon with three sides. A proof is a series of statements and reasons that establishes the truth of a mathematical claim(statement). To write a proof given a triangle, we...
Brian McLogan
How to find the hypotenuse of a triangle using Pythagorean Theorem
How to find the hypotenuse of a triangle using Pythagorean Theorem
Brian McLogan
Finding the six trigonometric functions from a triangle
👉 Learn how to evaluate the six trigonometric functions given a right triangle. A right triangle is a triangle with 90 degrees as one of its angles. A right triangle is made up of two legs, which formed the sides of the 90 degrees angle...
Brian McLogan
How to determine where the adjacent leg is on 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...
Curated Video
How to Use and Prove the Pythagorean Theorem
This video teaches the Pythagorean theorem, explaining its proof and how to use it to find missing side lengths of a right triangle. The lesson includes key vocabulary and examples with step-by-step instructions, making it easy to...
Brian McLogan
Given any point evaluate your six trig functions
👉 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
Master Finding the area and perimeter of a triangle (mistake)
Master Finding the area and perimeter of a triangle (mistake)
Brian McLogan
How to find the distance and bearing back to port word problem
👉 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
Evaluate trig functions using a right triangle and given the sin
👉 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...
Curated Video
Simplifying Square Roots with Physical Models
In this video, the teacher explains how to simplify square roots by using physical models and the Pythagorean theorem. They demonstrate how to calculate the length of a square root by finding the area of squares and splitting them into...
Let's Tute
Pythagoras Theorem Proof - Pythagorean Theorem
The Pythagoras Theorem says that, for any right angled triangle, the square of the hypotenuse is equal to the sum of the squares of remaining two sides.Out of all the different way of proving it, we will learn it by using the concept of...
Brian McLogan
Verifying an identity by multiplying
👉 Learn how to verify trigonometric identities by expanding the trigonometric expressions. When the given trigonometric expressions involve multiplications with more than one term in parenthesis, we start by expanding the expressions...
Brian McLogan
Evaluate the difference for two angles for sine from a triangle
Learn how to evaluate the sine 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...
Curated Video
Grade 8 Test Prep: Calculator Section Practice Questions
In this video, the teacher provides practice questions for Grade 8 students to prepare for end-of-year assessments or finals. The questions are based on Common Core standards and cover various topics such as geometry, linear equations,...
Curated Video
Finding Distance with Pythagorean Theorem
In this video, the teacher explains how to use the Pythagorean theorem to find the distance between two cities on a coordinate plane, using a standardized test question as an example. The teacher walks through the steps of identifying...