7.1.partA.lesson.done

7.1.partA.lesson.done - Lesson_7.1_Cofunction.notebook 1...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lesson_7.1_Cofunction.notebook 1 November 20, 2008 Nov 199:19 AM Chapter 7 - Trigonometric Identities and Trig Equations 7.1 - Equivalent Trig Functions Related Functions with and 2 Consider the four points separately and the primary trig ratios of the angles formed by the terminal arm as shown in the diagrams. cos( - ) =-cos sin( - ) = sin tan( - ) =-tan cos( + ) =-cos sin( + ) = -sin tan( + ) = tan cos(2 - ) = cos sin(2 - ) = -sin tan(2 - ) = -tan cos = x/r sin = y/r tan = y/x Rules for simplifying If is measured from the x-axis, ie or 2 , keep the trig ratio use the CAST rule for the +/- sign Lesson_7.1_Cofunction.notebook 2 November 20, 2008 Nov 193:08 PM Example 1 Simplify as a trig ratio of . a) tan( - ) b) cos (2 - ) c) sin( +) Example 2 If cos = , and 0< < a) cos( + ) b) cos (2 - ) c) sin( + ) d) tan( - ) Do sheet #1abcjkl, 3abe, 4ace Lesson_7.1_Cofunction.notebookLesson_7....
View Full Document

Page1 / 6

7.1.partA.lesson.done - Lesson_7.1_Cofunction.notebook 1...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online