How to Graph a Trigonometric Function in GeoGebra

You can use GeoGebra’s built-in tools to plot trigonometric functions. You can plot

  • sin(x) (sine)

  • asin(x) (the inverse function of sine)

  • cos(x) (cosine)

  • acos(x) (the inverse function of cosine)

  • tan(x) (tangent)

  • atan(x) (the inverse function of contangent)

GeoGebra Instruction 1

Plot a Trigonometric Function

1.
Open Algebra View and Graphics View under GeoGebra icon View in GeoGebra icon Menu.
2.
As an example, let’s plot sin(x). In an empty row in Algebra View, type

f = sin(x)

and press Enter. The graph then appears in Graphics View.

You can also modify the expression the way you’re used to doing, such as by adding an equilibrium d.

Example 1

Plot the function

f(x) = 2 sin(2x + π) + 5

for 0 x 2π in GeoGebra

In an empty row in GeoGebra, type

f = Function

and choose

Function(<Function>, <Start x-Value>, <End x-Value>)

from the suggestions that pop up. Replace the content of each field:

  • <Function> is replaced with 2*sin(2x+pi)+5

  • <Start x-Value> is replaced with 0

  • <End x-Value> is replaced with 2*pi

Press Enter. The plot will appear in Graphics View.

Screenshot of GeoGebra showing a trigonometric function

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