It says that c2, the square of one side of the triangle, is equal to a2 + b2, the sum of the squares of the the other two sides, minus 2ab cos C, twice their product times the cosine of the opposite angle. When the angle C is right, it becomes the Pythagorean formula.

Also, What is the formula of sin Cos tan?

The value of the tan function for any angle θ in terms of sin and cos can be given using the formula, tan θ = sin θ/cos θ.

Hereof, What is the father of trigonometry?

The first trigonometric table was apparently compiled by Hipparchus, who is consequently now known as “the father of trigonometry”.

Also to know What is SOH CAH TOA? “SOHCAHTOA” is a helpful mnemonic for remembering the definitions of the trigonometric functions sine, cosine, and tangent i.e., sine equals opposite over hypotenuse, cosine equals adjacent over hypotenuse, and tangent equals opposite over adjacent, (1) (2) (3) Other mnemonics include.

Who found trigonometry?

Trigonometry in the modern sense began with the Greeks. Hipparchus (c. 190–120 bce) was the first to construct a table of values for a trigonometric function.

20 Related Questions Answers Found

What is Cosec formula?

The cosecant formula is given as follows: cosec A = hypotenuse / opposite side = AB / BC = c / a. We know that, sin A = opposite side / hypotenuse.

How is sin calculated?

Sine (sin) function – Trigonometry. In a right triangle, the sine of an angle is the length of the opposite side divided by the length of the hypotenuse. … In any right triangle, the sine of an angle x is the length of the opposite side (O) divided by the length of the hypotenuse (H).

Who is the father of zero?

The first modern equivalent of numeral zero comes from a Hindu astronomer and mathematician Brahmagupta in 628. His symbol to depict the numeral was a dot underneath a number. He also wrote standard rules for reaching zero through addition and subtraction and the results of operations that include the digit.

Where is trigonometry used?

Trigonometry can be used to roof a house, to make the roof inclined ( in the case of single individual bungalows) and the height of the roof in buildings etc. It is used naval and aviation industries. It is used in cartography (creation of maps). Also trigonometry has its applications in satellite systems.

Who is father of polynomials?

Greek Mathematician Diophantus of Alexandria is the father of polynomials.

Can you use SOH CAH TOA?

They are often shortened to sin, cos, and tan. The calculation is simply


side of a right-angled triangle divided by another side …


just have to know which sides, and that is where “


” helps.

Sine, Cosine and Tangent.

sin(θ) = opposite / hypotenuse
tan(θ) = opposite / adjacent

Jul 13, 2021

What is the formula for SOH CAH TOA?


Soh… Sine = Opposite / Hypotenuse
…cah… Cosine = Adjacent / Hypotenuse
Tangent = Opposite / Adjacent

Can you use SOH CAH TOA any triangle?

Q: Is sohcahtoa only for right triangles? A: Yes, it only applies to right triangles. … A: They hypotenuse of a right triangle is always opposite the 90 degree angle, and is the longest side.

Who invented 0?

The first modern equivalent of numeral zero comes from a Hindu astronomer and mathematician Brahmagupta in 628. His symbol to depict the numeral was a dot underneath a number.

What do you call the longest side of a right triangle?

The hypotenuse of a right triangle is always the side opposite the right angle. It is the longest side in a right triangle. The other two sides are called the opposite and adjacent sides.

Who invented math?

The earliest evidence of written mathematics dates back to the ancient Sumerians, who built the earliest civilization in Mesopotamia. They developed a complex system of metrology from 3000 BC.

What is Cosec in math?

In a right angled triangle, the cosecant of an angle is: The length of the hypotenuse divided by the length of the side opposite the angle. The abbreviation is csc. csc θ = hypotenuse / opposite. It is not commonly used, and is equal to 1/sine.

What gives Cosec?

When the length of the hypotenuse is divided by the length of the opposite side, it gives the Cosecant of an angle in a right triangle. It is denoted as Cosec and sometimes as csc. It is one of the trigonometric functions, in trigonometry.

How do you do Cosec on a calculator?

Press the “2nd” key and then press “Cos.” Your calculator should display “cos” with a negative 1 for an exponent and an open parentheses. Enter the cosine ratio.

What is sin θ?

Looking out from a vertex with angle θ, sin(θ) is the ratio of the opposite side to the hypotenuse , while cos(θ) is the ratio of the adjacent side to the hypotenuse . No matter the size of the triangle, the values of sin(θ) and cos(θ) are the same for a given θ, as illustrated below.

What is sin equal to?

Sine, Cosine and Tangent

Sine Function: sin(θ) = Opposite / Hypotenuse
Cosine Function: cos(θ) = Adjacent / Hypotenuse
Tangent Function: tan(θ) = Opposite / Adjacent

What is the exact value of sin 0?

Answer) In Mathematics, the value of sin 0 degree is always equal to 0.

What if zero was not invented?

Without zero, modern electronics wouldn’t exist. Without zero, there’s no calculus, which means no modern engineering or automation. Without zero, much of our modern world literally falls apart. … But for the vast majority of our history, humans didn’t understand the number zero.

Who invented 1?

Hindu-Arabic numerals, set of 10 symbols—1, 2, 3, 4, 5, 6, 7, 8, 9, 0—that represent numbers in the decimal number system. They originated in India in the 6th or 7th century and were introduced to Europe through the writings of Middle Eastern mathematicians, especially al-Khwarizmi and al-Kindi, about the 12th century.

Is zero a number Yes or no?

0 (zero) is a number, and the numerical digit used to represent that number in numerals. … It fulfills a central role in mathematics as the additive identity of the integers, real numbers, and many other algebraic structures. As a digit, 0 is used as a placeholder in place value systems.