Evaluating Trigonometric Functions
4.4 (Day 4) Evaluating Trigonometric Functions
Use the MODE key on your calculator to choose DEGREES or RADIANS.
Find each value. Round your answers to three decimal places.
sin (250°) =
Use degrees and type: sin(250) Enter
tan (-95°) =
cos 36°50’ 25” =
cot 239° = [pic] =
csc 36° 50’ 25” = [pic] =
______________________________________________________________________________
[pic] =
Use radians and type: sin(π [pic] 8) Enter
[pic] = [pic] =
TURN->>>
Ex. Find values of [pic], to three decimal places (in degrees), where [pic]
(a) [pic]
First find the reference angle (first quadrant) by typing
[pic]
[pic]
Then store [pic] by typing .
Ask yourself: “Where is the cosine positive?”
The cosine is positive in quadrants I and IV. [pic] is your quadrant I answer.
To get quadrant IV, type .
[pic] = 22.089° in quadrant I and [pic] = 337.911° in quadrant IV.
(b) [pic]
First find the reference angle by typing
and store in .
(Do not type the negative sign; your reference angle is always in quadrant I.)
[pic]
[pic] (this is stored in A)
Ask yourself: “Where is the sine negative?”
The sine is negative in quadrants III and IV.
To get quadrant III, type .
To get quadrant IV, type .
[pic] = 217.582° in quadrant III and [pic] = 322.418° in quadrant IV.
-----------------------
2nd
cos
.9266
Enter
STO
Alpha
A
360
-
Alpha
A
[pic]
[pic]
[pic]
[pic]
Enter
0.60999
sin
2nd
A
A
./0› ±²µ¼¾¿ÂÆÍÖØèêëìíðñ÷ùúüÿ
óèÝóÔÝȽݲȲ¦›Œ€th›\›Ý›Ý›t¦›ÝŒ€Œt›Œ€hh?PÎ>*[pic]OJQJhCJOJQJaJh?PÎCJOJQJaJhCJOJQJaJh?PÎh?PÎCJOJQJAlpha
+
180
A
Alpha
-
360
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- acronyms and terms university of washington
- definition of reference angle purdue university
- residential replacement cost worksheet
- math ii unit 6
- graphic art a project for the calculator
- student lab 1 input processing and output
- bc analysis worksheet a graphing sine and cosine
- evaluating trigonometric functions
- stage 2 design university of washington
Related searches
- 6 trigonometric functions calculator
- find six trigonometric functions on a calculator
- evaluating exponential functions pdf
- graph trigonometric functions online
- trigonometric functions formula
- integration of trigonometric functions pdf
- trigonometric functions calculator
- derivatives of trigonometric functions pdf
- derivatives of trigonometric functions worksheet
- trigonometric functions worksheet pdf
- graphs of trigonometric functions worksheet
- inverse trigonometric functions worksheet