How to find the equation of a cosine function from a graph?

One way to solve the problem is to use the graph of a cosine function to create a table of values. After you graph the cosine function and find the values for the function between -90 and 90 degrees, add the values together. You now have the area under the curve, which is the sum of the areas between each line segment. Divide this number by two to find the total area under the curve, which is half of the circumference. Now you have the area of a complete circle

How to graph a cosine wave?

To graph a cosine wave, you can use the cosine graph in Excel. If you have a cosine equation with an absolute value, graph the absolute value of the function. If the equation has a negative exponent, graph the reciprocal of the equation.

How to find the equation of a cosine wave?

You can find the equation of a cosine wave by drawing a graph of the function. Using your calculator, find the values that represent the peaks and valleys of the graph. Use the values to create an equation in the form of an “infinite sum.”

How to find the equation of a sinuous cosine function from a graph?

We have seen how to find the equation of a cosine function from an axis. Now let us look at how to find the equation of a sinuous cosine function. The graph of the sinuous cosine function looks like a sine wave. You can use the period of a regular sine wave as the amplitude of the sinuous cosine function. In order to find the equation of this function, you need to determine the period of the sine wave.

How to find the equation of a cosine function with variable angles?

Sometimes, graphs of cosine functions will show a line that goes down and to the right or up and to the left. These graphs are on special polar graphs, which are graphs that show the relationship between two variables: the angle and the magnitude of the function. If you want to find the equation of a cosine function with a variable angle, you can convert your graph to a normal graph and use the “Fit” function to find the line that best matches your graph. Just select