7/23/2019 TI-Quick Reference SheetTrig

1/1

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TI-83+/84+ Quick Reference SheetTrigonometry Section

Inverse Functions: Remember: 1arcsin( ) sin ( )x x= The inverse reciprocals need special attention:

The graphs of the inverse functions will show the restricted domains

that ensure they are functions.

Probability section:Combination/permutation:

Enter first value then go to

MATHPRB

AT MOSTbinomcdf(n, p, r)

AT LEAST1-binomcdf(n, p, r-1)

Using same n, p, rparameters

Bernoulli Trials:EXACTLY

The formula:

r n r

n rC p q

i i

can be done usingbinompdf(Go to: DISTR (2

ndVARS), #0 binompdf

The parameters are:

binompdf (number of trials, probability of occurrence, number of

specific events)3 6 3

6 3 (.5) (.5)C

i i becomes binompdf(6, .5, 3)

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Radians/Degrees:

Degrees to radians: mult. by

180

Radians to degrees: mult. by180

To quickly change to degrees while

in radian mode, use the degree

symbol. 2nd

ANGLE - #1

Reciprocal Functions:

1. csc(x) uses1

sin( )x

2. sec(x) uses1

cos( )x

3. cot(x) uses1

tan( )x

To Graph Trig. Functions:1. Enter equation in Y=.

2. Use ZOOM #7 (scales2

or 90)

On 83+ or older OS, the graphs such

as tan(x) show vertical lines. Whilethey appear to be asymptotes, they

are not. They are connected mode.

Check your

MODE!

Verify Trig Identities:Place the left side of the equation in

Y1 and the right side in Y2. Set themark in front of Y2 to bubble.

Graph. If the equation is true, thebubble will run on top of the first

graph. Also check TABLE listings.

1

1 1

1tan ; 0

1cot ( ) tan ; 0

; 02

xx

x xx

x

>

= +