Angles and the Trigonometric Functions

Trigonometric Functions graphs, Inverse Trigonometric Functions

Trigonometric Identities and Equations

Laws of Sines, Cosines and Vectors

Complex Numbers, Polar Coordinates and Parametric Equations

In Exercises 54–67, solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.
__
sin 2x = √ 3 sin x

Solving Trigonometric Equations Using the Quadratic Formula - Example 1

Solving Quadratic Trig Equations

Solving trigonometric equation by using reciprocal function

In Exercises 54–67, solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

tan x = 2 cos x tan x

Solving a Basic Trigonometric Equation, Example 2

Pre Calculus Logarithms with Trigonometric Functions

In Exercises 97–116, use the most appropriate method to solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

cos x - 5 = 3 cos x + 6

Solving a Basic Trigonometric Equation, Example 1

Solving trigonometric equations with multiple angles

Solving simple trig equations

Solve a Trig Equation with Rounded Radian Solutions -  Angle Substitution with Pi

Solving a Trigonometric Equation by Factoring, Example 3

How To Solve Trigonometric Equations With Multiple Angles - Trigonometry

Solving Trigonometric Equations Part 1

Solving Word Problems Involving Trigonometric Equations, Example 2

In Exercises 97–116, use the most appropriate method to solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

3 tan² x - tan x - 2 = 0

In Exercises 54–67, solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

2 sin² x + sin x - 2 = 0

Solve a Basic Trig Equation Using the Unit Circle and Reference Triangles

Using Double Angle Identities to Solve Equations, Example 1

Solving a Basic Trigonometric Equation, Example 3

Solving a Trigonometric Equation by Factoring, Example 2

How to solve logarithmic and Trigonometric equation

Solving Word Problems Involving Trigonometric Equations, Example 1

In Exercises 54–67, solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

5 cos² x - 3 = 0

Exercises 25–38 involve equations with multiple angles. Solve each equation on the interval [0, 2𝝅).
__
√ 3
tan 3x = ---------
3

Solving Trigonometric Equation, Harder Example - Example 3

Solve a Trig Equation in Quadratic Form Using the Quadratic Formula (Cosine, 2 Solutions)

Simplifying Trigonometric Expressions Using Identities, Example 1

Solve Trigonometric Equations Using Calculator 2

Solving trig equations with a calculator

Identities to Solve Trigonometric Equations

Trigonometric Equations

Solving Trig Equations Using Identities

Solving a Trig Equation: cos(3x)=-1

Solve Trigonometric Equations Part 1

Exercises 25–38 involve equations with multiple angles. Solve each equation on the interval [0, 2𝝅).

3θ __ 
cot -------- = ﹣√ 3
2

Factoring Method for Solving Trig. Equations w/ Multiple Functions

Solving Trigonometric Equation, Harder Example - Example 2

In Exercises 121–126, solve each equation on the interval [0, 2𝝅).

3 cos² x - sin x = cos² x

Exercises 25–38 involve equations with multiple angles. Solve each equation on the interval [0, 2𝝅).

3θ 
sec -------- = ﹣2
2

Solving Trigonometric Equations Using the Quadratic Formula - Example 2

How to solve a trigonometric equation

Solve a Factorable Trig Equation with Exact and Rounded Radian Solutions

Exercises 25–38 involve equations with multiple angles. Solve each equation on the interval [0, 2𝝅).
__
√ 3
sin 2x = --------
2

Solving a trigonometric equation by factoring

Solving Trigonometric Equations - How to Write General Solution

In Exercises 97–116, use the most appropriate method to solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

sin 2x + sin x = 0

Solving Trigonometric Equations with Period Changes

Solving Trigonometric Equations III

Solving Equation with Exponential and Trigonometric Functions

Solving Trigonometric Equations

Pre-Calculus - Find All of the Solutions of an Equation Using the Double Angle Formulas

In Exercises 97–116, use the most appropriate method to solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

2 cos 2x + 1 = 0

Solving Trigonometric Equation, Harder Example - Example 1

Exercises 25–38 involve equations with multiple angles. Solve each equation on the interval [0, 2𝝅).

x ___
tan ------- = √ 3
2

In Exercises 54–67, solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

cos 2x = -1

Solve Trigonometric Equation by Factoring, Example 1

In Exercises 97–116, use the most appropriate method to solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

2 sin² x = 3 - sin x

In Exercises 97–116, use the most appropriate method to solve each equation on the interval [0, 2𝝅). Use exact values where possible or give approximate solutions correct to four decimal places.

tan x sec x = 2 tan x

Ex: Solve a Trigonometric Equation Using a Sum to Product Identity

Solving Trigonometric Equations Using the Quadratic Formula - Example 3

Ex: Solve a Factorable Trig Equation Using Radians - Exact Solutions

In Exercises 121–126, solve each equation on the interval [0, 2𝝅).

10 cos² x + 3 sin x - 9 = 0

Using Double Angle Identities to Solve Equations, Example 3

This course covers topics including trigonometric functions (with graphs and inverse functions), identities and equations, solutions of triangles, complex numbers and more.

College Trigonometry

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Sum and Difference Formulas

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Verifying Trigonometric Identities

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