Chapter 4 Summary

In the beginning of chapter 4, we talked about angle measurements. We learned how to convert between degrees, minutes and seconds. We reviewd about complementary and supplementary angles. We learned about unit circle. And trigonometric identities, sine, cosine and tangent. We learned how to graph them.  We also learned special angles' values.  In chapter4.5, we learned about verifying trig identities.  And then we learned how to use identities to solve trig equations.