 |
 |
 |
 |
 |
further reading | more topics » |
| programs | 3D theory | physics | maths | software | technology | about site | sitemap |
 |
algebra | geometry | calculus | discrete | statistics | proof | standards |
|
space |
elements |
surface |
transformations | trigonometry |
||
| rotation | affine | theory | |||||
|
triangles | functions | pythagoras | inverse | derived | series | hyperbola |
The square on the hypotenuse is equal to the sum of the squares on the other two sides.
which gives:
a2 = b2 + c2
from which we can derive the following relationships between the trig functions:
sin2(θ) + cos2(θ) = 1
sin2(θ) = 1 + tan2(θ)
cosec2(θ) = 1 + cot2(θ)
Its general form is:
a x2 + b x + c = 0
Usually a quadratic has two solutions or roots given by
This can be derived form first principles by completing the squares.
This page explains this.
|
metadata block |
|
| see also: |
|
| Correspondence about this page | |
|
Book Shop - Further reading. Where I can, I have put links to Amazon for books that are relevant to the subject, click on the appropriate country flag to get more details of the book or to buy it from them. |
|
|
Commercial Software Shop Where I can, I have put links to Amazon for commercial software, not directly related to the software project, but related to the subject being discussed, click on the appropriate country flag to get more details of the software or to buy it from them. |
|
This site may have errors. Don't use for critical systems.
Copyright (c) 1998-2013 Martin John Baker - All rights reserved - privacy policy.
