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Math 103: Precalculus12 chapters | 92 lessons | 10 flashcard sets

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The values of trigonometric functions are not just doubled when the value of x doubles. This quiz and corresponding worksheet will assess your knowledge of the formulas for finding sin, cos, or tan of (2x) and how to use them.

In this assessment you will be required to use your skills to:

- Identify the sine, cosine, and tangent double angle formulas
- Solve practice problems to find the value of cos(2x), sin(2x), or tan(2x)

**Problem solving**- use acquired knowledge to solve double angle trigonometric practice problems**Information recall**- access the knowledge you've gained regarding the double angle formulas for sine, cosine, and tangent**Making connections**- use understanding of the double angle formulas to find the value of a given trigonometric function when you have the value of another and a range for the value of x

For more information on the double angle formula, see the accompanying lesson by the same name. This lesson includes:

- Why the double angle formulas are necessary
- The formula for finding sin(2x)
- The formula for finding cos(2x)
- The formula for finding tan(2x)
- Examples of how to solve double angle formula problems

Final Exam

Chapter Exam

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Lesson
9 in chapter 11 of the course:

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Math 103: Precalculus12 chapters | 92 lessons | 10 flashcard sets

- Go to Functions

- Graphing Sine and Cosine 7:50
- Graphing Sine and Cosine Transformations 8:39
- Graphing the Tangent Function: Amplitude, Period, Phase Shift & Vertical Shift 9:42
- Unit Circle: Memorizing the First Quadrant 5:15
- Using Unit Circles to Relate Right Triangles to Sine & Cosine 5:46
- Special Right Triangles: Types and Properties 6:12
- Law of Sines: Definition and Application 6:04
- Law of Cosines: Definition and Application 8:16
- The Double Angle Formula 9:44
- How to Solve Trigonometric Equations for X 4:57
- List of the Basic Trig Identities 7:11
- Go to Trigonometry

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