Archive for December, 2007
Wednesday, December 26th, 2007
Angle is angle. Time is time. What is their relationship, if any?
The answer is important in the study of trigonometry.
Trigonometric expression can be written 2 ways:
sin A
sin 2 p f t
So there must be some relation between angle and time since the trigonometric function can be written both ways having ...
Posted in Trigonometry | No Comments »
Tuesday, December 25th, 2007
In trigonometric studies, we always come across 2 main functions, sine and cosine.
(Another function is Tangent, which is the division of sine by cosine).
Their shapes or profiles are similar besides having same amplitude.
So why the need to have these 2 main trigonometric functions when they are similar?
Though they looked the same in term of ...
Posted in Trigonometry | 1 Comment »
Monday, December 24th, 2007
Why do we care about the addition or subtraction of trigonometric functions?
(The basic Trigonometric functions are sine and cosine).
Answer:
Most signal, including our voice or speech, can be represented by the addition and subtraction of trigonometric functions.
Example of a signal: sin 2A + sin 4A - cos 2A - cos 4A
Another example: cos A ...
Posted in Trigonometry | No Comments »
Monday, December 24th, 2007
Maths educationis basically divided into two parts or levels. The fundamental and the advance parts.
In the fundamental part of maths education, learners pick up the principles or concepts of the maths and the "tips" in solving some standard maths questions.
Here steps are shown to the learners and is the part ...
Posted in Articles in General | No Comments »
Sunday, December 23rd, 2007
Look at the math question below. It is a valid question and is correct.
Think about its math principles in term of number base.
The question:
2 + 2 = 10 can be correct. Why?
We have always assumed that numbers are to the base of 10.
In the above case, it can be correct when their ...
Posted in Number | No Comments »
Wednesday, December 19th, 2007
Everyone can count. We have been taught to count since young.
The age to learn counting is getting younger. And it is now the norm even before getting to pre-school.
But there is something called the Number base that may be oblivious to us.
What is this Number Base?
The normal counting that we are ...
Posted in Number | 1 Comment »
