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presentation icon In the last lesson, we used the acute angles of right triangles to investigate trigonometric functions and solve problems. In this lesson, we will study angles whose measure can be any real number. Click here to begin.

instruction banner Explain why the following fraction is equivalent to 1.
180 degrees over pi radians


In your first post in this discussion, briefly describe situations where it would be beneficial to use each form and explain what information it gives. Then, return to the topic several times over the next few days to read your coursemates' posts. Reply to at least 2 of them, being sure to offer new insights, ask questions, and encourage further conversation.



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