1) What is this about?
These pictures are about finding the exact values of angles that aren't on the unit circle. We use trigonometric functions which have their own formulas depending on whether two angles are being added or subtracted to add or subtract to the given angle.
2) What does the reader need to pay attention to?
The reader should pay attention to where the coordinates come from as well as how we can derive sine, cosine, and tangent from one coordinate. Also, when finding tangent, we often have to multiply by the conjugate in the process.
No comments:
Post a Comment