1. 4.4 Trigonometric Functions of Any Angle

2. Ex.Find the sine, cosine, and tangent of if (-3,4) is a point on the terminal side of. (-3,4) -3 4 ? =5

3. Ex.Given and, find and. First, determine what quadrant theta lies in. Where is tan (-) and cos (+)? IV -5 4 = ?

4. Reference Angles A reference angle is the acute angle formed by the terminal side of and the horizontal axis. Find the reference angles of 300 o, 2.3, and –135 o. 300 o 60 o 1.57 3.14 2.3 rad 3.14 -2.30.84 -135 o 45 o

5. Evaluate the following. 240 o 60 o ref. angle 2 tan (-210 o ) 30 o ref. angle 1 2 45 o ref. angle 1

6. Find the cosine and tangent of theta if….. and 1 3 ? =