# Some of the Many Uses of Trigonometry...

Most students hate trigonometry. But that's a real shame because it is certainly one of the most useful bits of mathematics that you will do. Following are some of the applications of trigonometry - I hope you find them interesting.

### 1. Core Trigonometry

Trigonometric Functions

Trigonometric Graphs

Additional Topics in Trigonometry

### 2. Complex Numbers

Part 4. Polar Form

Part 5. Exponential Form

6. Products, Quotients, Powers and Roots

### 3. Differentiation

1. Derivatives of the Sine and Cosine Functions

2. Derivatives of Other Trig Functions3. Derivatives of Inverse Trig Functions

4. Applications: Derivatives of Trigonometric Functions

Split Functions

Curvilinear Motion

### 5. Integration

Methods of Integration (most of the chapter)

Integration Proj4

### 6. Differential Equations

1 Solns of Diff Equations

5 Series RL Circuit

RL Example 4

2nd ODE_Damped

DE_Proj_2

DE_Proj_3

### 7. Fourier Series

Fourier Series (whole chapter)

### 8. Laplace Transformation

### 9. Matrices

### 10. Plane Analytical Geometry

Inclination of a Line

7. Polar Coordinates

7 Curves in Polar Coordinates

### 11. Systems of Equations

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