- Who invented sine?
- What is CSC in terms of sin?
- What is the difference between a sine and cosine function?
- What is sin equal to?
- What is sine formula?
- What is CSC of an angle?
- What is the formula for sin a sin B?
- Is Sine valid in Scrabble?
- Why Sine is called sine?
- Is sin 1 the same as CSC?
- What is the inverse of sine called?
- What is sin 1 mean?
- Which coordinate is sine?
- Why do we use sine?
- How is trigonometry used in real life?
- What does a sine curve look like?
- How do you tell if a graph is cosine or sine?
- What is a unit circle in trigonometry?

## 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.

However this new notation was adopted very slowly, it took centuries..

## What is CSC in terms of sin?

cosecant. The cosecant is the reciprocal of the sine. csc ( A ) = 1 sin ( A ) \csc(A)=\dfrac{1}{\sin(A)} csc(A)=sin(A)1. secant. The secant is the reciprocal of the cosine.

## What is the difference between a sine and cosine function?

In a cosine graph, a positive or negative number vertically flips the graph and determines whether the graph starts at the maximum (if it’s positive) or minimum (if it’s negative). For a sine graph, a positive or negative number vertically flips the graph like it does with a cosine graph.

## 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 is sine formula?

= 0.500. The sine function, along with cosine and tangent, is one of the three most common trigonometric functions. 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’:

## 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. It is not commonly used, and is equal to 1/sine.

## What is the formula for sin a sin B?

2 sin A sin B = – cos (A + B) + cos (A – B)

## Is Sine valid in Scrabble?

SINE is a valid scrabble word.

## Why Sine is called sine?

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.

## Is sin 1 the same as CSC?

The secant of x is 1 divided by the cosine of x: sec x = 1 cos x , and the cosecant of x is defined to be 1 divided by the sine of x: csc x = 1 sin x .

## What is the inverse of sine called?

The inverse is used to obtain the measure of an angle using the ratios from basic right triangle trigonometry. … The inverse of sine is denoted as Arcsine or on a calculator it will appear as asin or sin-1.

## What is sin 1 mean?

Quick Answer: For a right-angled triangle: The sine function sin takes angle θ and gives the ratio opposite hypotenuse. The inverse sine function sin-1 takes the ratio oppositehypotenuse and gives angle θ And cosine and tangent follow a similar idea.

## Which coordinate is sine?

The x-coordinate is the value of cos θ, and the y-coordinate is the value of sin θ. The other points are reflections of the first point over the x-axis, the y-axis, or both. You can go through a similar procedure to find the values of and for . All four angles have a reference angle of radians or 45°.

## 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.

## How is trigonometry used in real life?

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 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.

## How do you tell if a graph is cosine or sine?

Look at the graphs of the sine and cosine functions on the same coordinate axes, as shown in the following figure. The graph of the cosine is the darker curve; note how it’s shifted to the left of the sine curve. The graphs of y = sin x and y = cos x on the same axes.

## What is a unit circle in trigonometry?

In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane.