Bell Ringer5-10-16. Right Triangles in the Unit Circle Tuesday, May 10, 2016.

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Presentation transcript:

Bell Ringer

Right Triangles in the Unit Circle Tuesday, May 10, 2016

The Unit Circle in the Coordinate Plane

Trigonometric Ratios

Reciprocal Trigonometric Ratios

Trig Ratios in a Circle

When are the trig values positive and when are they negative? Just remember: If you want someone to be positive, Add Sugar To Coffee.

Examples

More Examples

Pythagorean Identity cos 2 (θ ) + sin 2 (θ) = 1

More Examples

Assignments  13.3B Worksheet  All Odd problems need to be completed as a Classwork assignment. – Turn in when ALL ODD problems are complete. IF you don’t finish in class, turn in tomorrow.  All Even problems need to be completed as a Homework assignment.

Exit Ticket  1. What are the possibilities for the x and y coordinates of the quadrantal angles?  2. What are the “special” angles?  3. What are the (positive or negative) possibilities for the x and y coordinates of the “special” angles?