Kwandanee..TRIGS

1. The basics of Trigonometry Learning..while having fun!!!! By..Kwandanee D

3. As you can see the unit circle in trigonometry NEVER is greater than 1 nor less than -1. When working with the unit circle always remember that it reads counter clock-wise The unit circle quadrant 1 quadrant 2 quadrant 3 quadrant 4

4. Each quadrant is the same as in any other unit circle 1st.all numbers are + 2nd your x is - but your y is + 3rd both your x and y are - 4th your x is + and you y is - An angle is in standard position when the vertex is at the origin and one ray is on the positive x-axis

5. A ll S tudents T ake C lass Something for the future sine cosine tangent sine cosine tangent Sine Cosine tangent Sine Cosine tangent All positive All negative cept cosine All negative cept sine All negative cept tangent 1st 2nd 3rd 4th

7. Coterminal/reference Two angles sharing the same terminal and initial sides are called co-terminal angles Co-terminal Co-termial A reference angle is an acute angle formed by the terminal side Reference angle

8. Lets try it!!!! Not drawn to scale Base your answers on this unit circle 1.What is the measure of the terminal angle? 2.What is the measure of the coterminal angles? 3.What is the measure of the reference angle? 1.The terminal angle is 220 degrees 2.The 2 co-terminal angles are -220 and 220. 3.The reference angle is -40.