Triangle :- A triangle is a closed figure with 3 sides. It is a kind of polygon where the sum of angles is 180
Origin:- The word triangle is taken from the Latin word triangulus meaning three angles or corners.
Happy reading
Dr Rajesh Kumar Thakur
Sunday, February 26, 2017
Origin of Triangle
Triangle :- A triangle is a closed figure with 3 sides. It is a kind of polygon where the sum of angles is 180
Origin:- The word triangle is taken from the Latin word triangulus meaning three angles or corners.
Happy reading
Dr Rajesh Kumar Thakur
Saturday, February 25, 2017
ANGLE
Friday, February 24, 2017
Origin of FRACTION
Fraction
Fraction is a way of expressing a number that is a ratio of two integers.
Example :- a : b = a/b
Here 'a' is called Numerator and "b" is called denominator.
Indian used to write the fraction as we write it today but there were no line in between.
1/2 was written
1
2
but it was the Arabs who drew a line in between separating Numerator (top part) with Denominator (Bottom part).
There are instance in RigVeda where fraction has been used. अर्ध -Ardhya (1/2) , त्रिपाद tripad (3/4), पाद paad( ¼) , कुष्ठ kushtha (1/12), कला kala (1/16) are commonly seen in RigVeda. In Sulva sutra अंश ansh / भाग bhag has been used as triansh त्रिअंश or tribhag त्रि भाग for 1/3
Origin of word :-
The word fraction actually comes from the Latin "fractio" which means to break.
Happy reading
Dr Rajesh Kumar Thakur
origin of word Trignometry
What is Trigonometry?
A branch of mathematics that study about the relation between sides and angles of a right angled triangle. There are six relation that defines the Trigonometrical relation between sides and angles.
They are - sin, cos(ine), tan(gent), cot(angent), sec(ant) and cosec(ant).
The term "trigonometry" was derived from the Greek word "τριγωνομετρία" ("trigonometria"), meaning "triangle measuring", from "τρίγωνο" (triangle) plus "μετρεῖν" (to measure).
Happy reading
Dr Rajesh Kumar Thakur
A branch of mathematics that study about the relation between sides and angles of a right angled triangle. There are six relation that defines the Trigonometrical relation between sides and angles.
They are - sin, cos(ine), tan(gent), cot(angent), sec(ant) and cosec(ant).
The term "trigonometry" was derived from the Greek word "τριγωνομετρία" ("trigonometria"), meaning "triangle measuring", from "τρίγωνο" (triangle) plus "μετρεῖν" (to measure).
Happy reading
Dr Rajesh Kumar Thakur
origin of word surd
What is a surd?
When root of a non- negative rational number doesn’t provide an exact solution then the root is called a surd.
Example: - √3 , √5 ,etc.
Origin :-
Around 820 AD al-Khwarizmi called irrational numbers "'inaudible" ... this was later translated to the Latin surdus meaning deaf or mute.
Dr Rajesh Kumar Thakur
When root of a non- negative rational number doesn’t provide an exact solution then the root is called a surd.
Example: - √3 , √5 ,etc.
Origin :-
Around 820 AD al-Khwarizmi called irrational numbers "'inaudible" ... this was later translated to the Latin surdus meaning deaf or mute.
Dr Rajesh Kumar Thakur
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