1. QUADRANT I THE UNIT CIRCLE

2. REMEMBER Find the length of the missing side: 1 1 1 x y x y x y Aim: Use the unit circle in order to find the exact value of a trigonometric expression.

3. THE UNIT CIRCLE Draw a circle whose center at the origin, (0, 0), and has a radius of 1. 1 1 1 1 1 Aim: Use the unit circle in order to find the exact value of a trigonometric expression.

4. QUADRANT I 30° (, ) 1 45° (, ) 1 60° (, ) 1 1 Aim: Use the unit circle in order to find the exact value of a trigonometric expression. Place Special Triangles into the first quadrant of the Unit Circle then label the points created.

5. Soh Cah Toa: Aim: Use the unit circle in order to find the exact value of a trigonometric expression.

6. CRITICAL ANGLE TABLE 0°30°45°60°90° Sin Cos Tan Aim: Use the unit circle in order to find the exact value of a trigonometric expression.

7. EXACT VALUE The drawing of the Unit Circle (first quadrant) or the table just created can be used to find the exact value of the following trigonometric expression: Find the exact value of Aim: Use the unit circle in order to find the exact value of a trigonometric expression.