Section 3-2

1 / 8

# Section 3-2 - PowerPoint PPT Presentation

Section 3-2. Proving Trig Identities. Objective. In this section we will prove that two identities are equal. Solving Trig Identities. YOU WILL SOLVE THESE TWO DIFFERENT WAYS Start with one side, and manipulate until it equals the other side Manipulate both sides until they are equal.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'Section 3-2' - berenice-shannon

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### Section 3-2

Proving Trig Identities

Objective
• In this section we will prove that two identities are equal.
Solving Trig Identities
• YOU WILL SOLVE THESE TWO DIFFERENT WAYS
• Start with one side, and manipulate until it equals the other side
• Manipulate both sides until they are equal
Strategies/Tips
• If one of the sides of the identity has a fraction, try to get a common denominator and combine.
• Try to rewrite one side in terms of only sinx and cosx.
• If one of the sides is in factored form, try multiplying it out.
Strategies/Tips

4. Work with the more complicated side first

5. When there is a squared function ( ) you will usually use one of the Pythagorean identities.

6. When both sides are complicated, simplify both so they match