How to Graph Entering Functions Special Graphs Using the Home Screen
Setting a Window Working With a Graph Draw Menu Home
How to Graph

I. Entering the Function in the Graph Window

B. Trigonometric Functions

A TI-83 and a TI-84 have keys for three trigonometric functions: sine, cosine, and tangent. You will have to use a ratio to graph cosecant, secant, and cotangent.

1. Entering Sine, Cosine, Tangent

You will need to use parentheses when entering most trigonometric functions.

Example: Enter the functions shown below.

Enter a simple trig function.
Close the parentheses.
The key is .
You cannot enter this
as it is written.
You need parentheses
around the fraction.
Functions entered.


2. Entering Cosecant, Secant, Cotangent

These functions will require the use of the reciprocal identities.

Example: Enter the following functions.

Put parentheses around the 2x.
The coefficient is not put
in the denominator.
There are several ways that this
function could be entered, but
until you have experience
entering functions, just use the
keystrokes shown in the
window below.
Functions entered.

A. Polynomial Functions