SUGAR MILLS HIGH SCHOOL

total students 72
A+:5

Shyampur Sugar Mills High school:

A+:23

A:44

২০১২ শিক্ষাবর্ষের ১ম শ্রেণীর বাংলা বই এর শেষ এ এত বড় ভুল । তাহলে কি আমরা ছোট থেকে ভুল শিখব ?এটা কি ঠিক?

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Suppose that x, y, and z are numbers.

The Commutative Laws

The Commutative Law of Addition

The Commutative Law of Multiplication

The Associative Laws

The Associative Law of Addition

The Associative Law of Multiplication

The Distributive Law

The Identity Properties

The Zero Property

There exists a number, , such that

The Multiplicative Identity Property

There exists a number, , such that for any number , Multiplying one by a number results in that number.

To be complete, we state also that .

Inverse Properties

The Additive Inverse

For any number , there exists a number x such that

The Multiplicative Inverse

If is any number except 0, there exists a number x such that

Laws of Equality

The Reflexive Property:

The Symmetric Property:

If , then

The Transitive Property:

If , and , then

If , then

If , then

Laws of Inequality

If , then

If and , then

If and , then

Trigonometry is a branch of mathematics that means "measurement of, with and by means of triangles".

Astronomers as early as 150 BC developed the study of trigonometry. By about 1500 AD the trig. ratios (sine, cosine and tangent) were established. Once again, right-angled triangles, as in Pythagoras' Theorem, are important when making calculations with the trig ratios.

Rule relating the lengths of the sides of a right triangle. It says that the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse (the side opposite the right angle). That is, a² + b² = c², where c is the length of the hypotenuse. Triads of whole numbers that satisfy it (e.g., 3, 4, and 5) are called Pythagorean triples