# Trigonometry Notes to know for AS and A2.

Trigonometry Notes to know for AS and A2.

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- Created by: Matthew Hamer
- Created on: 08-05-09 11:14

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Maths Alevel: Trigonometry

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Graphs of sec x, cosec x, cot x

You will also need to know the graphs and properties of the

reciprocal functions:

The following properties apply to any reciprocal function:

1. The reciprocal of zero is +

2. The reciprocal of + is zero

3. The reciprocal of 1 is 1

4. The reciprocal of 1 is 1

5. Where the function has a maximum value, its reciprocal has a

minimum value

6. If a function increases, the reciprocal decreases

7. A function and its reciprocal have the same sign

The curves of cosec x, sec x and cot x are shown below:

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