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Curated Video
Reciprocal and Quotient Identities (Basic Trigonometric Identities)
In this video, we are going to derive basic reciprocal and quotient identities, and then we will use those identities to simplify expressions.
Curated Video
Unit Circle 4 - Evaluating Trig Functions
How to find exact value of trig functions with the unit circle. In the last of 4 videos, we look at how we can use our newly derived unit circle to quickly evaluate trigonometric functions. We will learn how to evaluate all six...
Curated Video
Solve Trig Equation with Unit Circle (4 examples)
How do I solve trig equations using the unit circle? Sometimes, we can solve sine and cosine equations without a calculator. To do this, we just have to reference the unit circle. This video solve four examples.
Curated Video
Complex Numbers in Polar Form
How do you write complex numbers in polar form? If they are in polar form, how do you rewrite them in argand or rectangular form? This video includes step by step instructions for converting complex values back and forth between these...
Curated Video
How to Graph Sine and Cosine
How do I graph sin and cos? In this video, we use the unit circle to derive the graphs for sine and cosine. These periodic functions are very similar, but there are some slight differences.
Curated Video
Solve Quadratic Trig Equations
How do you solve trig equations that have something squared in them? In this video I show how to use a U-substitution to rewrite trigonometric equations as quadratics, which makes them easier to solve. We use the unit circle to solve...
Curated Video
Solve Trig Equations Non-Unit Circle Values (using a calculator)
How do you solve trig equations with the values are not on the unit circle? When your solving results in decimals, you can the inverse trig function in the calculator to find the solution. Then, use reference angles to find he other...
Brian McLogan
Remember your Formulas
If you have a test or quiz coming up and are worried you will not remember all of your formulas then use this video to help you remember exactly what you need to know: <b<br/>r/>
Brian McLogan
Solve this equation without a calculator
In this video we are going to explore how to evaluate using the unit circle without a calculator
Brian McLogan
If you know your identities then you can solve
In this video I will show you how to use trig identities to help you solve a trigonometric equation.
Brian McLogan
Step-by-step Guide To Evaluating The Six Trig Functions For Any Given Angle
In this video we are going to focus on evaluating the six trigonometric functions using the unit circle
⭐️ Evaluating Trigonometric Expressions: A Practice Worksheet -...
⭐️ Evaluating Trigonometric Expressions: A Practice Worksheet -...
Brian McLogan
Understand evaluating Sine Cosine Tangent Using the Unit Circle
When you need to understand evaluating functions sine cosine and tangent the unit circle can be your best friend.
⭐️ Step-by-step Guide To Evaluating The Six Trig Functions For Any Given Angle -...
⭐️ Step-by-step Guide To Evaluating The Six Trig Functions For Any Given Angle -...
Brian McLogan
Evaluate Trig Functions With a Really Big Angle
In this video I am going to show you how to evaluate the six trigonometric functions when you have a really big angle. We will evaluate sine, cosine, tangent, secant, cosecant, cotangent.
⭐️ Evaluating Trigonometric...
⭐️ Evaluating Trigonometric...
Curated Video
Trigonometry and the Unit Circle
This video will explain trigonometric functions and how to use them with the unit circle.
Math Fortress
Calculus III: Two Dimensional Vectors (Level 9 of 13)
This video is a review of Two Dimensional Vectors. This video goes over unit vectors, standard unit vectors and direction of vectors.
Curated Video
Finding Trigonometric Coordinates for the 45-Degree Angle on the Unit Circle
In this video, students learn how to find the coordinates of the 45-degree angle on the unit circle by using properties of special right triangles. The video explains the concept of isosceles right triangles and how they relate to the...
Brian McLogan
What is the formula for component form of a vector
in this video series I will show you how to find the angle of a vector when given in component form or as a linear combination. To understand the direction of a vector it is important to go back to the unit circle and determine how we...
Brian McLogan
Given a point find the six trigonometric functions of the angle
In this video series I show you how to evaluate the six trigonometric functions when given a point. We do this by creating a right triangle and finding the hypotenuse by using the Pythagorean theorem. #trigonometry...
Brian McLogan
Finding the magnitude and direction of a vector from a word problem
In this video series you will learn multiple math operations. I teach in front of a live classroom showing my students how to solve math problems step by step. My math tutorials should be used to review previous lessons, complete your...
Brian McLogan
How to determine the point on the unit circle given an angle
👉 Learn how to find the point on the unit circle given the angle of the point. A unit circle is a circle whose radius is 1. Given an angle in radians, to find the coordinate of points on the unit circle made by the given angle with the...
Brian McLogan
Find the point on the unit circle given an angle
👉 Learn how to find the point on the unit circle given the angle of the point. A unit circle is a circle whose radius is 1. Given an angle in radians, to find the coordinate of points on the unit circle made by the given angle with the...
Brian McLogan
Using triangles to evaluate for compositions of inverse functions
👉 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,...
Curated Video
Introduction to Sine, Cosine, and Tangent Functions and Their Graphs
The video provides a clear explanation of the sine, cosine, and tangent functions and their corresponding graphs. It starts by introducing the unit circle and how it relates to the functions. Then, it explains the formulas for each of...
Brian McLogan
Review of how to set up a point to evaluate six trigonometric 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...