1 / 7

Trig Identities

Trig Identities. Lesson 3.1. Ratio Identities. Since we know that x = cos t and y = cos t …. Reciprocal Identities. Identities given by definition. (x,y). r y . θ. x. Pythagorean Identities. From the unit circle we saw that x 2 + y 2 = 1 Thus

birch
Download Presentation

Trig Identities

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Trig Identities Lesson 3.1

  2. Ratio Identities • Since we know that x = cos t and y = cos t …

  3. Reciprocal Identities • Identities given by definition

  4. (x,y) r y θ x Pythagorean Identities • From the unit circle we saw that x2 + y2 = 1 • Thus • Also from (x, y) defn.

  5. Verifying Trig Identities • We will be given an equation • Must prove that it is an identity • Strategy • Work with one side only • Substitute expressions using the identities • Goal is to manipulate one side to look like the other side

  6. Try It Out • Try these

  7. Assignment • Lesson 3.1 • Page 222 • Exercises 1 – 55 EOO

More Related