Trigonometry exploration

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Questions to answer based on exploring trigonometry

What is your name and period number? *

http://tube.geogebra.org/m/1449345 1. Give a clear rule for identifying the hypotenuse of a right triangle. *

2. Give a clear rule for identifying the opposite side *

3. Give a clear rule for identifying the adjacent side to an angle. *

http://tube.geogebra.org/m/1506545 4. Use the "sine ratio" with the app. What is the sine of 0? Explain why using what you learned with the app. *

5. Use the "cosine ratio". What is the cosine of 0? Explain why using what you learned with the app. *

6. Use the "tangent ratio". What is the tangent of 0? Explain why using what you learned with the app. *

7. What is the tangent of 45º? Explain why using what you learned with the app. *

8. Guess, based on the app, what is the tangent of 90º? Explain your answer. (You won't be able to get a clear answer: just guess.) *

http://tube.geogebra.org/m/2057567 9. After using the "true meaning" app, explain using percentages what the meaning of sine, cosine and tangent are. *

http://tube.geogebra.org/m/209555 10.) Explain the relationship between the yellow line and the sine.

11.) Explain the relationship between the purple line and the cosine.

12.) Explain how, using the unit circle, you might find the sine or cosine of an angle larger than 90º.

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