Formula Booklet
Part if Topic |
Name |
Equation |
3.1 |
Length of arc
|
|
Area of sector
|
|
3.2 |
Trigonometric identity |
|
3.3 |
Pythagorean identity
|
|
Double angle formulae
|
|
3.6 |
Cosine rule
|
|
Sine rule
|
|
Area of triangle
|
|
Basics and Main rules
Triangles
|
|
Soh Cah Toa = |
|
|
|
Example question
Find side a:
Question |
Solution |
Find side a, when A is 62° and side b is 8 |
|
- Identify the appropriate equation
- Input the values
- Rearrange
- Calculate
|
|
Sine rule
|
|
Used when you know 3 out of these values -
Example question
Question |
Solution |
Find B, when side a is 2 and c is 3 |
|
- Identify the appropriate equation
- Input the values
- Rearrange
- Calculate
|
|
Cosine rule
|
|
Used when you know 3 out of these values -
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Example question
Question |
Solution |
Find side c, when C is 46.6, side a is 2 and side b is 4 |
|
- Identify the appropriate equation
- Input the values
- Rearrange
- Calculate
|
|
Editors- admin_andrei - 150 words.
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