What are the 3 trig identities?

Sine, cosine and tangent are the primary trigonometry functions whereas cotangent, secant and cosecant are the other three functions.
…
The reciprocal trigonometric identities are:

• Sin θ = 1/Csc θ or Csc θ = 1/Sin θ
• Cos θ = 1/Sec θ or Sec θ = 1/Cos θ
• Tan θ = 1/Cot θ or Cot θ = 1/Tan θ

What are the 3 trigonometric identities Class 10?

In class 10th, there are basically three trigonometric identities, which we learn in the trigonometry chapter. They are: Cos² θ + Sin² θ = 1. 1 + Tan² θ = Sec² θ



If θ = 0, then,

• 1 + tan²0 = sec²0.
• 1 + 0² = 1. …
• 1 = 1.

How many trig identities are there?

If you’re taking a geometry or trigonometry class, one of the topics you’ll study are trigonometric identities. There are numerous trig identities, some of which are key for you to know, and others that you’ll use rarely or never.

What are the basic identities?

Basic Trig Identities

What are the 3 reciprocal identities?

Their names are cosecant, secant and cotangent. Cosecant is the reciprocal identity of sine, secant that of cosine and cotangent that of tangent.

What are the algebraic identities?

The algebraic equations which are valid for all values of variables in them are called algebraic identities. They are also used for the factorization of polynomials. In this way, algebraic identities are used in the computation of algebraic expressions and solving different polynomials.

What are the trigonometric ratios Class 10?

Trigonometric Ratios



sin A=opposite side/hypotenuse=BC/AC. cos A=adjacent side/hypotenuse=AB/AC. tan A=opposite side/adjacent side=BC/AB. cosec A=hypotenuse/opposite side=AC/BC.

How do you solve trigonometric identities?

Since sin (− θ ) = − sin θ , sin (− θ ) = − sin θ , sine is an odd function. Since, cos (− θ ) = cos θ , cos (− θ ) = cos θ , cosine is an even function.



Verifying the Fundamental Trigonometric Identities.

Who invented trigonometry?

Hipparchus

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.

Who is father of trigonometry?

mathematician Hipparchus

The first known table of chords was produced by the Greek mathematician Hipparchus in about 140 BC. Although these tables have not survived, it is claimed that twelve books of tables of chords were written by Hipparchus. This makes Hipparchus the founder of trigonometry.

Who is the mother of trigonometry?

Hipparchus was born in Nicaea, Bithynia, and probably died on the island of Rhodes, Greece. He is known to have been a working astronomer between 162 and 127 BC.

Who invented zero?

About 773 AD the mathematician Mohammed ibn-Musa al-Khowarizmi was the first to work on equations that were equal to zero (now known as algebra), though he called it ‘sifr’. By the ninth century the zero was part of the Arabic numeral system in a similar shape to the present day oval we now use.

What is Hipparchus full name?

Hipparchus, also spelled Hipparchos, (born, Nicaea, Bithynia [now Iznik, Turkey]—died after 127 bce, Rhodes?), Greek astronomer and mathematician who made fundamental contributions to the advancement of astronomy as a mathematical science and to the foundations of trigonometry.

Did Hipparchus get married?

Very little is known about Hipparchus’s life other than his works. We do not know if he ever married or had children. From observations made by him we can deduce he was in Alexandria in 146 BC and in Rhodes in 127 and 126 BC. We do not know when he died – other than it was after 126 BC.

What did Ptolemy do astronomy?

Ptolemy synthesized Greek knowledge of the known Universe. His work enabled astronomers to make accurate predictions of planetary positions and solar and lunar eclipses, promoting acceptance of his view of the cosmos in the Byzantine and Islamic worlds and throughout Europe for more than 1400 years.

Who invented trigonometry in India?

Aryabhata I

In India, the father of trigonometry is Aryabhata I, also known as the father of zero. He is an Indian mathematician and astronomer. Aryabhata gathered and elaborated the improvements of the Siddhantas points in path-breaking literature, the “Aryabhatiya”. The first table of sines is given in the Aryabhatiya.

Who is the father of zero?

Brahmagupta

“Zero and its operation are first defined by [Hindu astronomer and mathematician] Brahmagupta in 628,” said Gobets. He developed a symbol for zero: a dot underneath numbers.

Why sine is called sine?

The word sine (Latin sinus) comes from a Latin mistranslation by Robert of Chester of the Arabic jiba, itself a transliteration of the Sanskrit word for half of a chord, jya-ardha. The word cosine derives from a contraction of the medieval Latin complementi sinus.

Who invented zero Indian?

mathematician Brahmagupta

History of Math and Zero in India



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.

Who Discovered 1?

In category theory, 1 is sometimes used to denote the terminal object of a category. In number theory, 1 is the value of Legendre’s constant, which was introduced in 1808 by Adrien-Marie Legendre in expressing the asymptotic behavior of the prime-counting function.

Who invented maths?

Archimedes is known as the Father of Mathematics. Mathematics is one of the ancient sciences developed in time immemorial.



Table of Contents.

Is India good at math?

MUMBAI: Here’s proof that Indians have a flair for mathematics. Indians scored higher than the global average in GMAT’s quantitative section that tests math skills in 2010. But Chinese students have the highest average in quantitative scores, and India is far behind, at seventh position.

Did Aryabhata invented zero?

Aryabhata is the first of the great astronomers of the classical age of India. He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhaskara I (629 AD) identifies with Patilputra (modern Patna). Aryabhata gave the world the digit “0” (zero) for which he became immortal.

How do you say math in British?

For a field centered on numbers, math seems pretty confused about its pluralization. Americans and Canadians tend to say math while Brits and Australians opt for maths.

How do you say zero in British?

“Zero” is the usual name for the number 0 in English. In British English “nought” is also used. In American English “naught” is used occasionally for zero, but (as with British English) “naught” is more often used as an archaic word for nothing. “Nil”, “love”, and “duck” are used by different sports for scores of zero.

How do you spell Shein?

With a shortened name, Shein (pronounced She-in) started out in its current form five years later.