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

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Presentation transcript:

4.4 Trigonometric Functions of Any Angle

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

Ex.Given and, find and. First, determine what quadrant theta lies in. Where is tan (-) and cos (+)? IV -5 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 rad o 45 o

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

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