 # How Many Types Of Trigonometry Are There?

## Who invented trigonometry table?

astronomer HipparchusThe Greek astronomer Hipparchus (d.

c.

127 bc) was the first to compose a table of trigonometric functions (based on the chords in a circle), which he calculated at increments of 7° 30′.

Ptolemy (d.

c.

ad 145) improved on Hipparchus’s tables by calculating the values at 30′ increments..

## What jobs use trigonometry?

Other jobs that may use trigonometry are navigation, land surveying, mathematics, science, engineering, architecture, cartography, computer graphics, machining, meteorology, music theory, oceanography, phonetics, seismology, and statistics.

## How do you start trigonometry?

Learn Trigonometry in 5 stepsStep 1: Review your all basics.Step 2: Start with the right angle triangles. … Example: A right angle have two sides 5 cm and 3 cm find the hypotenuse.Solution: Given opposite =5cm and adjacent=3 cm.Using Pythagoras theorem. … Step 4: Learn the other important function of trigonometry.More items…•

## Why Sine is called sine?

The word sine comes from the Latin sinus, bosom, because early translators mistook the Arabic word for chord and thought it was the Arabic word for bosom. The “co-” prefix in cosine and cotangent simply stands for co-angle, the complementary angle. The cosine of an angle is the sine of its complementary angle.

## What are the basics of trigonometry?

There are six trigonometric ratios, sine, cosine, tangent, cosecant, secant and cotangent. These six trigonometric ratios are abbreviated as sin, cos, tan, csc, sec, cot. These are referred to as ratios since they can be expressed in terms of the sides of a right-angled triangle for a specific angle θ.

## What are the 3 basic trigonometric ratios?

There are three basic trigonometric ratios: sine , cosine , and tangent . Given a right triangle, you can find the sine (or cosine, or tangent) of either of the non- 90° angles. Example: Write expressions for the sine, cosine, and tangent of ∠A .

## Who is the father of trigonometry?

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

## Who invented 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.

## What is sin equal to?

Always, always, the sine of an angle is equal to the opposite side divided by the hypotenuse (opp/hyp in the diagram). The cosine is equal to the adjacent side divided by the hypotenuse (adj/hyp). (1) Memorize: sine = (opposite side) / hypotenuse. cosine = (adjacent side) / hypotenuse.

## What are the 8 trigonometric identities?

THE EIGHT FUNDAMENTAL IDENTITIESsin * csc = 1. cos * sec = 1. tan * cot = 1. … 5.) cos/sin * cot = = cot * cot. … sin^2 + cos^2 = 1. 1 + cot^2 = csc^2. tan^2 + 1 = sec^2. … 4.) sin * csc = = sin * 1/sin. … 3.) sin * csc – sin^2 = = 1-sin^2. … Ratio Identities. Exercise.2.) tan * cot = = sin/cos * cos/sin. … Made by; Jose Carlo Antonio L. Nasol 10B ©2013. = cos.More items…

## What is trigonometry with example?

Trigonometric functions are used in obtaining unknown angles and distances from known or measured angles in geometric figures. … For example, csc A = 1/sin A, sec A = 1/cos A, cot A = 1/tan A, and tan A = sin A/cos A.

## Who found trigonometry?

Hipparchus of NicaeaThe first trigonometric table was apparently compiled by Hipparchus of Nicaea (180 – 125 BCE), who is now consequently known as “the father of trigonometry.” Hipparchus was the first to tabulate the corresponding values of arc and chord for a series of angles.

## 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.

## 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)

## What are six trigonometric ratios?

Identifying the Six Trigonometric Functions Determine the six trigonometric ratios for a given angle in a right triangle. Recognize the reciprocal relationship between sine/cosecant, cosine/secant, and tangent/cotangent. Use a calculator to find the value of the six trigonometric functions for any acute angle.

## How do you calculate sin?

Sin, Cos and TanThe sine of the angle = the length of the opposite side. the length of the hypotenuse.The cosine of the angle = the length of the adjacent side. the length of the hypotenuse.The tangent of the angle = the length of the opposite side. the length of the adjacent side.

## What is CSC of an angle?

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.

## What are the 9 trig identities?

Sine, Cosine and TangentSine Function:sin(θ) = Opposite / HypotenuseCosine Function:cos(θ) = Adjacent / HypotenuseTangent Function:tan(θ) = Opposite / Adjacent

## What are the 3 trigonometric functions?

The most widely used trigonometric functions are the sine, the cosine, and the tangent.

## What are the six trigonometric functions?

The trigonometric functions include the following 6 functions: sine, cosine, tangent, cotangent, secant, and cosecant.

## What is the ratio of tan?

Tangent ratio is the ratio of opposite side to adjacent side of a right triangle. Same as the sine and cosine ratios, tangent ratios can be used to calculate the angles and sides of right angle triangles.