In Try This 3 you may have seen that the slope of the terminal arm in standard position at angle θ is equal to tan θ.
In Try This 4 you will explore a relationship between sine, cosine, and tangent.
Recall from Module 4 that cos θ and sin θ can be defined as the x- and y-coordinates of the unit circle, respectively. Look at the following diagram.
Save your responses in your course folder.
With a partner or group, discuss the following question based on the relationship you determined in Try This 4.
In terms of the graph in question 2 of Try This 4, how can you explain the relationship you determined in question 1?
If required, save a record of your discussion in your course folder.
Recall that the following relationship is true for similar triangles.