United States
Australia
Canada
Ireland
New Zealand
Singapore
United Kingdom

Welcome Back to StudyPug

Incorrect sign in combination. Please try again.

Remember me

Forgot your password?

New to StudyPug? Sign up now.

Change subject
Grade 6 Math
Grade 7 Math
Grade 8 Math
Grade 9 Math
Grade 10 Math
Grade 11 Math
Grade 12 Math
Pre-Algebra
College Algebra
Calculus 1
Calculus 2
Statistics
AP Statistics
University Statistics
AP Calculus AB
AP Calculus BC

Home
Grade 12 Math
Solving Trigonometric Equations

Solving trigonometric equations using double-angle identities

Still Confused?

Try reviewing these fundamentals first

Trigonometry
Reference angle
Trigonometry
Find the exact value of trigonometric ratios
Trigonometry
ASTC rule in trigonometry (All Students Take Calculus)
Trigonometry
Double-angle identities

Nope, got it.

That's it, no more lessons

Still Confused?

Nope, got it.

That's it, no more lessons

Still don't get it?

Nope, I got it.

Still don't get it?

Review these basic concepts…

Reference angle
Find the exact value of trigonometric ratios
ASTC rule in trigonometry (All Students Take Calculus)
Double-angle identities

Nope, I got it.

or

Start now and get better math marks!

Get Started Now

Start now and get better math marks!

Get Started Now

Chapter 13.7 Playlist

Lesson: 1a) - Utilizing "Double-Angle Identities" to solve:

\cos 2x = 2 \sin^2x

0 \leq x \leq 2\pi

Intro
Learn
Practice

Do better in math today

Get Started Now

Chapter 13 Topics:

13.1
Solving first degree trigonometric equations
13.2
Determining non-permissible values for trig expressions
13.3
Solving second degree trigonometric equations
13.4
Solving trigonometric equations involving multiple angles
13.5
Solving trigonometric equations using pythagorean identities
13.6
Solving trigonometric equations using sum and difference identities
13.7
Solving trigonometric equations using double-angle identities
Back to Course Index

Don't just watch, practice makes perfect.

Do better in math today

Get Started Now

Chapter 13 Topics:

13.1
Solving first degree trigonometric equations
13.2
Determining non-permissible values for trig expressions
13.3
Solving second degree trigonometric equations
13.4
Solving trigonometric equations involving multiple angles
13.5
Solving trigonometric equations using pythagorean identities
13.6
Solving trigonometric equations using sum and difference identities
13.7
Solving trigonometric equations using double-angle identities
Back to Course Index

Don't just watch, practice makes perfect.

Solving trigonometric equations using double-angle identities

Basic concepts:
Reference angle
Find the exact value of trigonometric ratios
ASTC rule in trigonometry (All Students Take Calculus)
Double-angle identities

Related concepts:
Derivative of trigonometric functions

Lessons

1.
Utilizing "Double-Angle Identities" to solve:

Solving trigonometric equations using double-angle identities

Don't just watch, practice makes perfect.

We have 680 practice questions in Grade 12 Math for you to work through.

Get Started Now

Solving trigonometric equations using double-angle identities

Don't just watch, practice makes perfect.

We have over 680 practice questions in Grade 12 Math for you to master.

Get Started Now

Solving trigonometric equations using double-angle identities

undefined

Correct! Displaying next question.

Lesson Feedback

Share your thoughts with us. Your input helps us make StudyPug even better.

Question Feedback

Share your thoughts with us. Your input helps us make StudyPug even better.

Algebra Basic Math Calculus Geometry Trigonometry Statistics

About Us FAQ Contact Us Blog Pricing Sitemap

Try reviewing these fundamentals first

TrigonometryReference angle

TrigonometryFind the exact value of trigonometric ratios

TrigonometryASTC rule in trigonometry (All Students Take Calculus)

TrigonometryDouble-angle identities

Nope, got it.

Play next lesson

That's it, no more lessons

Practice this topic

Nope, got it.

Play next lesson

That's it, no more lessons

Goto next topic

Still don't get it?

Nope, I got it.

Still don't get it?

Review these basic concepts…

Reference angle

Find the exact value of trigonometric ratios

ASTC rule in trigonometry (All Students Take Calculus)

Double-angle identities

Nope, I got it.

Play next lesson or Practice this topic

Start now and get better math marks!

Keep exploring StudyPug

Start now and get better math marks!

Keep exploring StudyPug

Lesson: 1a

Selected

Lesson: 1b

Intro

Learn

Practice

Do better in math today

Don't just watch, practice makes perfect.

Do better in math today

Don't just watch, practice makes perfect.

Lessons

1.

Utilizing "Double-Angle Identities" to solve:

a)

cos2x=2sin2x\cos 2x = 2 \sin^2x cos2x=2sin​2​​x0≤x≤2π 0 \leq x \leq 2\pi0≤x≤2π

b)

tanx−cotx=2\tan x - \cot x = 2 tanx−cotx=20≤x≤2π 0 \leq x \leq 2\pi0≤x≤2π

Don't just watch, practice makes perfect.

Solving trigonometric equations using double-angle identities

Don't just watch, practice makes perfect.

We have over 680 practice questions in Grade 12 Math for you to master.

Trigonometry
Reference angle

Trigonometry
Find the exact value of trigonometric ratios

Trigonometry
ASTC rule in trigonometry (All Students Take Calculus)

Trigonometry
Double-angle identities

or

$\cos 2x = 2 \sin^2x$
$0 \leq x \leq 2\pi$

$\tan x - \cot x = 2$
$0 \leq x \leq 2\pi$