Unit 8

Read the following sections in Chapter 9 and 10:

Section 9.1 Solving Trigonometric Equations with Identities

Section 9.2 Sum and Difference Identities

Section 9.3 Double-Angle, Half-Angle, and Reduction Formulas

Section 10.3 Polar Coordinates

Section 10.4 Polar Coordinates: Graphs

Section 10.5 Polar Form of Complex Numbers

You should attempt the exercises in the book as indicated below.

These exercises help to establish an understanding of the concepts involved. If necessary, reread the examples and exercises solved in the book. The answers are at the end of the book.

Section 10.3 exercises: 1, 9, 13, 21, 29, 41, 53, 57, 63, 65, 73, 75

Section 10.4 exercises: 1, 11, 25, 31, 35, 43, 47, 51, 55, 65

Section 10.5 exercises: 1, 11, 15, 21, 25, 29, 31, 35, 43, 47, 51, 55, 61

You are allowed to use the book and other resources to answer the problems. You are welcome to ask about these in the Course Forum.

Optional Video Resources

Access these online resources for additional instruction and practice with trigonometry.

Mathispower4u. (2010, June 19). Introduction to polar coordinates [Video file]. Retrieved from

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Mathispower4u. (2010, June 19). Animation: Comparing polar and rectangular coordinates [Video file]. Retrieved from

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Mathispower4u. (2010, June 19). Graphing polar equations I [Video file]. Retrieved from

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Mathispower4u. (2010, June 19). Graphing polar equations II [Video file]. Retrieved from

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Mathispower4u. (2010, June 19). Animation: Graphing polar equations [Video file]. Retrieved from

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Mathispower4u. (2012, November 8). Graphing polar equations on the TI84 graphing calculator [Video file]. Retrieved from

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Mathispower4u. (2010, June 19). The product and quotient of complex numbers in trigonometric form [Video file]. Retrieved from

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Mathispower4u. (2010, June 19). De Moivre's Theorem [Video file]. Retrieved from

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