- Why Sine is called sine?
- Where did sine come from?
- What is the period of sin?
- Who is father of trigonometry?
- What are the 9 trig identities?
- What does a sine curve look like?
- Why do we use sine?
- Who invented sine?
- How do you describe a sine wave?
- What are the 3 trigonometric functions?
- What is C in a sine equation?
- What is the formula for sine?
- What are the symbols in trigonometry?
- What are the three characteristics of a sine wave?
- What is C in a trig function?

## Why Sine is called sine?

In mathematics, the sine is a trigonometric function of an angle.

…

The word “sine” (Latin “sinus”) comes from a Latin mistranslation by Robert of Chester of the Arabic jiba, which is a transliteration of the Sanskrit word for half the chord, jya-ardha..

## Where did sine come from?

The modern word “sine” is derived from the Latin word sinus, which means “bay”, “bosom” or “fold” is indirectly, via Indian, Persian and Arabic transmission, derived from the Greek term khordḗ “bow-string, chord”.

## What is the period of sin?

2πThe period of the sine curve is the length of one cycle of the curve. The natural period of the sine curve is 2π. So, a coefficient of b=1 is equivalent to a period of 2π. To get the period of the sine curve for any coefficient b, just divide 2π by the coefficient b to get the new period of the curve.

## Who is father of trigonometry?

Hipparchus of NicaeaHipparchus of Nicaea (/hɪˈpɑːrkəs/; Greek: Ἵππαρχος, Hipparkhos; c. 190 – c. 120 BC) was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry but is most famous for his incidental discovery of precession of the equinoxes.

## 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 does a sine curve look like?

The domain of the sine function As you drag the point A around notice that after a full rotation about B, the graph shape repeats. The shape of the sine curve is the same for each full rotation of the angle and so the function is called ‘periodic’. The period of the function is 360° or 2π radians.

## Why do we use sine?

The sine function is defined as the ratio of the side of the triangle opposite the angle divided by the hypotenuse. This ratio can be used to solve problems involving distance or height, or if you need to know an angle measure. Example: … To find the length of the side opposite the angle, d, we use the sine function.

## Who invented sine?

Abu’l WafaSine was introduced by Abu’l Wafa in 8th century, as a more convenient function, and gradually spread first in the Muslim world, and then to the West. (But apparently it was used in India centuries before him), as a more convenient function.

## How do you describe a sine wave?

A sine wave is a geometric waveform that oscillates (moves up, down or side-to-side) periodically, and is defined by the function y = sin x. In other words, it is an s-shaped, smooth wave that oscillates above and below zero.

## What are the 3 trigonometric functions?

The most widely used trigonometric functions are the sine, the cosine, and the tangent. Their reciprocals are respectively the cosecant, the secant, and the cotangent, which are less used in modern mathematics.

## What is C in a sine equation?

The value of variable ‘c’ moves the sine graph to the right or the left. When c > 0, the graph moves to the left. When c < 0, the graph moves to the right. This horizontal movement is called the phase shift.

## What is the formula for sine?

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). In a formula, it is written as ‘sin’ without the ‘e’: Often remembered as “SOH” – meaning Sine is Opposite over Hypotenuse.

## What are the symbols in trigonometry?

There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).

## What are the three characteristics of a sine wave?

Sinusoidal Amplitude, Frequency, and Phase The three characteristics that separate one sinusoid from another are amplitude, frequency, and phase.

## What is C in a trig function?

C is for cruisin’ left or right in a trigonometry equation The value of C changes the graph by moving the whole curve to the left or right of where it usually is.