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

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

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.

How do you graph a sine function?

How to Graph a Sine Function

1. Find the values for domain and range. No matter what you put into the sine function, you get an answer as output, because.
2. Calculate the graph’s x-intercepts.
3. Calculate the graph’s maximum and minimum points.
4. Sketch the graph of the function.

### What are the characteristics of the graphs of the sine and cosine functions?

The sine and cosine functions have several distinct characteristics:

• They are periodic functions with a period of.
• The domain of each function is ( − ∞ , ∞ ) and the range is.
• The graph of y = sin x y = sin x is symmetric about the origin, because it is an odd function.

What does a cos graph look like?

To graph the cosine function, we mark the angle along the horizontal x axis, and for each angle, we put the cosine of that angle on the vertical y-axis. The result, as seen above, is a smooth curve that varies from +1 to -1. It is the same shape as the cosine function but displaced to the left 90°.

#### What is difference between sine and cosine wave?

Key Difference: Sine and cosine waves are signal waveforms which are identical to each other. The main difference between the two is that cosine wave leads the sine wave by an amount of 90 degrees. A sine wave depicts a reoccurring change or motion. The cosine function is moved to the left by an amount of π/2.

Why is sine important?

As we learned, sine is one of the main trigonometric functions and is defined as the ratio of the side of the angle opposite the angle divided by the hypotenuse. It’s important for finding distances or height and can also be used to find angle measures, which are measured in radians.

## What is cos in a graph?

Graph of the cosine (cos) function – Trigonometry. To graph the cosine function, we mark the angle along the horizontal x axis, and for each angle, we put the cosine of that angle on the vertical y-axis. The result, as seen above, is a smooth curve that varies from +1 to -1.

What is the formula for a sine wave?

Sine Wave. A general form of a sinusoidal wave is y(x,t)=Asin(kx−ωt+ϕ) y ( x , t ) = A sin ( kx − ω t + ϕ ) , where A is the amplitude of the wave, ω is the wave’s angular frequency, k is the wavenumber, and ϕ is the phase of the sine wave given in radians.

### What is the largest possible value for sine and cosine?

The largest possible value for the sine function and the cosine function is 1 and the smallest possible value -1 the range for each of these functions is -1 & +1.

What is the difference between sine and cosine?

Key Difference: Sine and cosine waves are signal waveforms which are identical to each other. The main difference between the two is that cosine wave leads the sine wave by an amount of 90 degrees. A sine wave depicts a reoccurring change or motion.

#### How do you find the equation of a sine graph?

The general equation of a sine graph is y = A sin(B(x – D)) + C. The general equation of a cosine graph is y = A cos(B(x – D)) + C. Example: Given a transformed graph of sine or cosine, determine a possible equation.

How do you write a sine equation?

A general equation for the sine function is y = A sin Bx. The A and B are numbers that affect the amplitude and period of the basic sine function, respectively.