# Trigonometric Identities Help : Videos | Worksheets | Word Problems

Many students find trigonometric identities difficult. At TuLyn, we have hundreds of free trigonometric identities video tutorials, printable trigonometric identities worksheets, and trigonometric identities word problems to help you better understand trigonometric identities and get better grades.

# Trigonometric Identities

Many students find trigonometric identities difficult. They feel overwhelmed with trigonometric identities homework, tests and projects. And it is not always easy to find trigonometric identities tutor who is both good and affordable. Now finding trigonometric identities help is easy. For your trigonometric identities homework, trigonometric identities tests, trigonometric identities projects, and trigonometric identities tutoring needs, TuLyn is a one-stop solution. You can master hundreds of math topics by using TuLyn.

At TuLyn, we have over 2000 math video tutorial clips including trigonometric identities videos, trigonometric identities practice word problems, trigonometric identities questions and answers, and trigonometric identities worksheets.

Our trigonometric identities videos replace text-based tutorials and give you better step-by-step explanations of trigonometric identities. Watch each video repeatedly until you understand how to approach trigonometric identities problems and how to solve them.
• Hundreds of video tutorials on trigonometric identities make it easy for you to better understand the concept.
• Hundreds of word problems on trigonometric identities give you all the practice you need.
• Hundreds of printable worksheets on trigonometric identities let you practice what you have learned by watching the video tutorials.
How to do better on trigonometric identities: TuLyn makes trigonometric identities easy.

# Sine Cosine Tangent Video Clip

Sine Cosine Tangent
Video Clip Length: 2 minutes 18 seconds
Video Clip Views: 34826

This clip gives the definitions of the trigonometric functions sine, cosine and tangent.

curves, functions, identities, plane figures, shapes, trigonometric functions, trigonometric identities

# Finding Trigonometric Values Using Sohcahtoa Video Clip

Finding Trigonometric Values Using Sohcahtoa
Video Clip Length: 3 minutes 45 seconds
Video Clip Views: 12404

functions, identities, sohcahtoa, trigonometric functions, trigonometric identities

# Evaluating Trigonometric Expressions Using Sum Of Two Angles Identity Video Clip

Evaluating Trigonometric Expressions Using Sum Of Two Angles Identity
Video Clip Length: 1 minute 34 seconds
Video Clip Views: 10125

evaluating expressions, evaluating trigonometric expressions, expressions, identities, trigonometric expressions, trigonometric identities

# Evaluating Trigonometric Expressions Using Pythagorean Identity 2 Video Clip

Evaluating Trigonometric Expressions Using Pythagorean Identity 2
Video Clip Length: 2 minutes 13 seconds
Video Clip Views: 8510

evaluating expressions, evaluating trigonometric expressions, expressions, identities, trigonometric expressions, trigonometric identities

# Evaluating Trigonometric Expressions Using Double Angle Identity Video Clip

Evaluating Trigonometric Expressions Using Double Angle Identity
Video Clip Length: 2 minutes 18 seconds
Video Clip Views: 8444

evaluating expressions, evaluating trigonometric expressions, expressions, identities, trigonometric expressions, trigonometric identities

# Evaluating Trigonometric Expressions Using Double Angle Identity 2 Video Clip

Evaluating Trigonometric Expressions Using Double Angle Identity 2
Video Clip Length: 1 minute 36 seconds
Video Clip Views: 8353

evaluating expressions, evaluating trigonometric expressions, expressions, identities, trigonometric expressions, trigonometric identities

# Evaluating Trigonometric Expressions Using Difference Of Two Angles Identity Video Clip

Evaluating Trigonometric Expressions Using Difference Of Two Angles Identity
Video Clip Length: 4 minutes 21 seconds
Video Clip Views: 8342

evaluating expressions, evaluating trigonometric expressions, expressions, identities, trigonometric expressions, trigonometric identities

# Evaluating Trigonometric Expressions Using Pythagorean Identity Video Clip

Evaluating Trigonometric Expressions Using Pythagorean Identity
Video Clip Length: 2 minutes 24 seconds
Video Clip Views: 8114

evaluating expressions, evaluating trigonometric expressions, expressions, identities, trigonometric expressions, trigonometric identities

# Ratio Identities Video Clip

Ratio Identities
Video Clip Length: 2 minutes 20 seconds
Video Clip Views: 8038

functions, identities, ratio identities, trigonometric functions, trigonometric identities

# Reciprocal Identities Video Clip

Reciprocal Identities
Video Clip Length: 2 minutes 25 seconds
Video Clip Views: 6664

functions, identities, reciprocal identities, trigonometric functions, trigonometric identities

# Top Trigonometric Identities Word Problems

• A man on a 135-ft vertical cliff looks down (#2873)
A man on a 135-ft vertical cliff looks d... ...s the friend from the base of the cliff?
curves, functions, identities, plane figures, polygons, pythagorean theorem, right triangles, shapes, sohcahtoa, triangles, trigonometric functions, trigonometric identities
• A ladder rests against a wall (#2926)
A ladder rests against a wall. the top o... ...3 with the wall. how long is the ladder?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities
• A ramp is at an angle of elevation (#1987)
A ramp is at an angle of elevation of 30... ...meters. What is the lenght of the ramp?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities
• From the top of a lighthouse (#1560)
From the top of a lighthouse 160 feet ab... ...the boat to the base of the lighthouse?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities
• A ski slope at a mountain has an angle of elevation (#2257)
A ski slope at a mountain has an angle o... ...is 1808 feet. How long is the ski slope?
functions, identities, sohcahtoa, trigonometric functions, trigonometric identities

# Homework Help Questions

• cos 3 t = cos3 t - 3 sin2 t cos t
• tan 59
• a=8.5 c = 14.2
• Prove the identity: cos3x=4cos x-3cos x
• Find the exact value of tan(105°). Use a sum or difference identity.

# Post a homework question on trigonometric identities:

How many legs in total do a chicken, and a sheep have?

### Trigonometric Ratios

Hundreds of video clips, worksheets, and word problems on trigonometric ratios.

### SOHCAHTOA

Hundreds of video clips, worksheets, and word problems on sohcahtoa.

### Reciprocal Identities

Hundreds of video clips, worksheets, and word problems on reciprocal identities.

### Ratio Identities

Hundreds of video clips, worksheets, and word problems on ratio identities.

### Identities

Watch video clips on identities, print identities worksheets, practice identities word problems.