But what does it mean? I was stuck thinking sine had to be extracted from other shapes. Geometry is about shapes, lines, and so on.

The shape of the sine curve forms a regular pattern the curve repeats after the wheel has gone around once.

We say such curves are periodic. The period is the time it takes to go through one complete cycle. This quantity of a sine curve is called the amplitude of the graph.

This indicates how much energy is involved in the quantity being graphed.

Higher amplitude means greater energy. The rotation angle in radians is the same as the time in seconds. See more on radians. All the graphs in this chapter deal with angles in radians.

Radians are much more useful in engineering and science compared to degrees. When the angle is in the first and second quadrants, sine is positive, and when the angle is in the 3rd and 4th quadrants, sine is negative.

The above animation is loosely based on a demo graph by HumbleSoftware. It is an indication of how much energy the wave contains. The amplitude is the distance from the "resting" position otherwise known as the mean value or average value of the curve.

Amplitude is always a positive quantity. We could write this using absolute value signs.What is the mathematical equation for a sine wave?

[closed] Ask Question. I recently learned that an audio sine wave is called that way because it is of the shape of the graph of a sine function. So (correct me if I'm wrong), the equation for a sine function is: If someone asked me to give the equation of a sine curve, I would write.

When finding the equation for a trig function, try to identify if it is a sine or cosine graph. To find the equation of sine waves given the graph, find the amplitude which is half the distance between the maximum and minimum.

Next, find the period of the function which is the horizontal distance for the function to repeat. Basic Sine and Cosine Curves The black portion of the graph represents one period of the function and is called one cycle of the sine curve.

The domain of the sine and cosine functions is the set of all real numbers. The range of each function is the interval [–1, 1].

Each function has a period of 2. Below are two different ways to write a it must directly change the graph in a specific manner.

Which equation changes the period and contains the point (-3,4)? Graphing Form for Trigonometric Functions Sine Cosine Period: Amplitude: Height: The Key Point is on the Sine Graph Use the period to plot the point where it repeats.

Sine waves confused me. Yes, I can mumble "SOH CAH TOA" and draw lines within triangles. But what does it mean?.

I was stuck thinking sine had to be extracted from other shapes. In this section we will derive the vector and scalar equation of a plane. We also show how to write the equation of a plane from three points that lie in the plane.

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Writing the equation from the graph of a sine function by Ms. Toepfer on Prezi