Archive for the ‘Trigonometry’ Category
Saturday, March 8th, 2008
In maths, if we practice well with understanding, we will surge forward in our learning, leading the others and gaining valuable knowledge.
However, if we take it easy, trying to buy time and not learning seriously, our maths learning will lag behind others.
In trigonometry, sine waves do perform the same.
If an energetic, excited ...
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Friday, March 7th, 2008
In mathematics, trigonometric expression is represnted by y = a sin (bx + c).
The 3 parameters are amplitude (a), period / frequency factor(b) and phase (c).
All 3 parameters, defined by the trigonometric equation, affect the profile of the sine wave.
While the "a" parameter affects the height or amplitude of the sine wave, how does ...
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Sunday, February 17th, 2008
This post talks about what exactly a sine wave is, and a very unique application of this sine wave as an analytical tool.
So what is a sine wave or what does it represents?
The diagram below will explain the concept of this sine wave.
On the left side of the above diagram ...
Posted in Trigonometry | 1 Comment »
Saturday, February 16th, 2008
In a triangle, there are some angles or sub-divided angles within it which relates to each other in some way. The concept of their relationship is simple.
This post is to highlight the fact that once the principle of angles (in a triangle) is understood, the relationship between the angles become ...
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Sunday, February 3rd, 2008
There are times when we are required to sketch trigonometric waveform given the mathematical expression. By understanding the mathematical principle explained below, you can be rest assured that sketching the graphs is a breeze. Here we go .....
Trigonometric function relies on 3 parameters to define its shape (or graph).
They are ...
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Sunday, January 27th, 2008
In trigonometry, we are dealing with angles. The value of the angles can be indicated as positive or negative. What does that mean?
Convention:
Positive-valued angle means anti-clockwise rotation (or forward moving direction).
Negative-valued angle means clockwise rotation (or reverse moving direction).
Diagram 1 below shows the convention in graphic form.
Diagram 1
Besides rotational direction, what ...
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