Dr. J's Maths.com
Where the techniques of Maths
are explained in simple terms.
Where the techniques of Maths
are explained in simple terms.
Trigonometry - Basic relationships.
Summary.
- Algebra & Number
- Calculus
- Financial Maths
- Functions & Quadratics
- Geometry
- Measurement
- Networks & Graphs
- Probability & Statistics
- Trigonometry
- Maths & beyond
- Index
Use this summary to help you learn the results - all of which are important.
Cover up the third column with a page or your calculator, answer the question and then check.
NO CHEATING!!!
| Basic ratios.
|
sin x° = |  |
| cos x° = |  |
|
| tan x° = |  |
|
| Reciprocal ratios.
Remember.Think third letter. |
cosec x°= |
|
| sec x° = |  |
|
| cot x° = |  |
|
| Complementary results. | sin (90° - x°) = | cos x° |
| cos (90° - x°) = | sin x° | |
| tan (90 - x°) = | cot x° | |
| Special result. | tan x° = |  |
| Pythagorean results. | sin2 x + cos2 x = | 1 |
| tan2 x + 1 = | sec2 x | |
| 1 + cot2 x = | cosec2 x |
