Brian McLogan
Evaluate the sine, cosine, and tangent for an angle 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...
Curated Video
Finding the Tangent of an Acute Angle in a Right Triangle
In this video, the teacher explains how to use the tangent ratio to find the height of a flying plane. By setting up an equation using the tangent of the given angle and the known distance, the teacher demonstrates how to solve for the...
Curated Video
Trig Ratios on the X and Y-Axes: Using Coordinates of the Unit Circle
In this video, the teacher explains how to find the sine, cosine, and tangent of angles on the x and y-axes using coordinates of a unit circle. They also discuss quadrantal angles and the concept of undefined trig ratios.
Curated Video
Introduction to the Cosine Function and Trigonometry Ratios
The video explains the basics of trigonometry, the three important ratios (sine, cosine, and tangent) used to calculate side lengths and angles in triangles, and the labeling of right angle triangles. It then focuses on the cosine...
Curated Video
Introduction to the Sine Rule in Trigonometry
The Sine This video is a lecture on the sine rule in trigonometry, focusing on how to use it to solve problems involving non-right-angled triangles. The video begins with an overview of trigonometry and the important ratios sine, cosine,...
Curated Video
SohCahToa: Finding Side Lengths and Angles in Right Triangle Problems
This video is on calculating side lengths and angles using sine, cosine, and tangent ratios. The instructor emphasizes the importance of accurately labeling triangles with opposite, adjacent, and hypotenuse sides before selecting a ratio...
Brian McLogan
What is the period of tangent and cotangent
👉 Learn the basics of graphing a tangent and a cotangent function. To plot the tangent and the cotangent graph we choose a set of points and form a table of values with which we plot the points on the x-y coordinate axis to obtain the...
Curated Video
Trigonometry: Understanding the Tangent Function
The video is a lecture on the tangent function and its relation to trigonometry. The lecturer explains the importance of accurately labeling triangles and knowing the specific values of the tangent function at certain angles. They also...
Curated Video
Finding Acute Angle Measures in Right Triangles using Inverse Sine Function
In this video, you will learn how to find the measure of an acute angle in a right triangle using the inverse sine function. The video explains the ratios of side lengths for the trigonometric functions and introduces the concept of...
Brian McLogan
How to Find the Missing Angle Using Inverse Sine Triangle
👉 Learn how to evaluate inverse trigonometric functions. When an angle is unknown but the value of one of the trigonometric functions of the angle is known, we can evaluate the value of the angle using the inverse trigonometric function...
Curated Video
Using a Unit Circle to Find Trigonometric Function Values
Learn how to use a unit circle to study angles and find the values of sine, cosine, and tangent functions. The teacher reviews the ratios of sides in special triangles and emphasizes the importance of drawing the reference triangle...
Brian McLogan
Evaluate the six trig functions given a point in fractions
In this video series I show you how to evaluate your trigonometric functions for any angle. When we have a point that is not on the unit circle we create a triangle to help us evaluate our trig functions and then create a right triangle...
Curated Video
Understanding the Domain of Trigonometric Functions: Examining Denominators of Trig Ratios
In this video, students will learn about the domain of the six trigonometric functions by examining the denominators of the trig ratios. They will understand the reciprocal pairs of the trig functions and how they can be rewritten in...
Brian McLogan
How to use the sine function to find the missing side of a triangle
👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right triangle enables us to solve for any...
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.
Curated Video
Introduction to Trigonometry Functions in Right-Angle Triangles
This video is an introduction to trigonometry functions, which are used to calculate side lengths and angles in triangles using three important ratios: sine, cosine, and tangent. The video explains how to establish a right-angle triangle...
Curated Video
Trigonometric Ratios and the Unit Circle
This video explains the definitions of the trigonometric ratios, specifically using the unit circle to determine their values beyond 90 degrees and into negatives. The video demonstrates how to use the unit circle to find the values of...
Brian McLogan
Find the six trigonometric functions when given sine and a constraint on cosine
👉 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
How do we determine the three trig ratios for 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...
Brian McLogan
How to solve the missing length of a triangle using tangent
👉 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 are the three basic trigonometric function ratios
👉 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
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...
Brian McLogan
Using the sine function to find the missing length of the hypotenuse
👉 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
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...