Instructional Video2:38
Curated Video

Finding Acute Angle Measures in Right Triangles Using Inverse Cosine

K - 5th
This video explains how to find the measure of an acute angle in a right triangle when only the side lengths are known. It introduces the concept of inverse trigonometric functions, specifically the inverse cosine function, to determine...
Instructional Video7:04
Math Fortress

Calculus II: Integration By Parts (Level 6 of 6)

12th - Higher Ed
This video goes over two examples, covering the proper way to find definite integrals that require the use of multiple integration techniques. Specifically, integration by parts and u-substitution.
Instructional Video4:16
Curated Video

Introduction to Inverse Trigonometric Functions

K - 5th
This video explains how to use inverse trigonometric functions to find angle measures in right triangles. It covers the definitions and properties of inverse trig functions and demonstrates their application through example problems.
Instructional Video3:29
Curated Video

Finding the Angle of Elevation

K - 5th
In this video, the teacher explains how to find the angle of elevation or depression in a right triangle. Using the concepts of inverse trigonometric functions and the side lengths of the triangle, the teacher demonstrates how to set up...
Instructional Video8:12
Math Fortress

Calculus III: The Dot Product (Level 10 of 12)

12th - Higher Ed
This video goes over the dot product also known as the scalar product. This video covers direction angles and direction cosines. 3 examples are also covered illustrating how to solve problems involving direction angles and direction...
Instructional Video7:05
Math Fortress

Calculus II : Integration By Parts (Level 6 of 6)

12th - Higher Ed
This video goes over two examples| covering the proper way to find definite integrals that require the use of multiple integration techniques. Specifically| integration by parts and u-substitution.
Instructional Video4:03
Brian McLogan

What is the definition of the inverse cosine function

12th - Higher Ed
👉 Learn how to evaluate inverse trigonometric functions. The inverse trigonometric functions are used to obtain theta, the angle which yielded the trigonometric function value. It is usually helpful to use the calculator to calculate the...
Instructional Video1:44
Brian McLogan

Evaluating Inverse Trigonometric Functions

12th - Higher Ed
👉 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...
Instructional Video1:49
Brian McLogan

Evaluating the composition of Functions

12th - Higher Ed
👉 Learn how to evaluate an expression with the composition of a function and a function inverse. Just like every other mathematical operation, when given a composition of a trigonometric function and an inverse trigonometric function,...
Instructional Video7:08
Brian McLogan

Find the measure of an angle using three side lengths of a triangles - math help

12th - Higher Ed
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...
Instructional Video1:36
Brian McLogan

Evaluating Inverse Trigonometric Functions

12th - Higher Ed
👉 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...
Instructional Video3:25
Brian McLogan

How to find the angle between two vectors and dot product

12th - Higher Ed
In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need...
Instructional Video1:30
Brian McLogan

Evaluating Inverse Trigonometric Functions

12th - Higher Ed
👉 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...
Instructional Video11:48
Brian McLogan

Finding the angle between 2 vectors given vectors as linear combinations with angles

12th - Higher Ed
Learn how to determine the angle between two vectors. To determine the angle between two vectors you will need to know how to find the magnitude, dot product and inverse cosine. Then, the angle between two vectors is given by the inverse...
Instructional Video9:33
Flipping Physics

An introductory Relative Motion Problem with Vector Components

12th - Higher Ed
This relative motion problem addresses how to deal with vectors that do not form right triangles.
Instructional Video4:26
Brian McLogan

How to find the angle between two vectors written as a linear combination

12th - Higher Ed
Learn how to determine the angle between two vectors. To determine the angle between two vectors you will need to know how to find the magnitude, dot product and inverse cosine. Then, the angle between two vectors is given by the inverse...
Instructional Video11:30
Brian McLogan

How to evaluate the inverse of trigonometric functions with unit circle

12th - Higher Ed
👉 Learn how to evaluate inverse trigonometric functions. The inverse trigonometric functions are used to obtain theta, the angle which yielded the trigonometric function value. It is usually helpful to use the calculator to calculate the...
Instructional Video6:27
Brian McLogan

Applying the law of cosines when no triangle exists

12th - Higher Ed
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...
Instructional Video8:48
Brian McLogan

How to use law of cosines to find the missing angles of a triangle given SSS

12th - Higher Ed
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...
Instructional Video7:09
Brian McLogan

Master solving word problems using inverse trigonometry

12th - Higher Ed
Master solving word problems using inverse trigonometry
Instructional Video2:04
Brian McLogan

How to use the inverse cosine function to find the missing angle of a triangle

12th - Higher Ed
👉 Learn how to find a missing angle 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 gives us the relationship between the angles of a right...
Instructional Video10:19
Math Fortress

Calculus III: The Dot Product (Level 5 of 12)

12th - Higher Ed
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...
Instructional Video2:06
Brian McLogan

How to evaluate the inverse of cosine with a calculator

12th - Higher Ed
👉 Learn how to evaluate inverse trigonometric functions. The inverse trigonometric functions are used to obtain theta, the angle which yielded the trigonometric function value. It is usually helpful to use the calculator to calculate the...
Instructional Video6:26
Brian McLogan

Learn how to solve using the law of cosines

12th - Higher Ed
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...