Sharp EL-9600 User Manual page 26

To graph the inverse cosine function, press Y=
prompt. Enter cos
Set your viewing window by pressing ZOOM , touching E TRIG, and double
touching 5 cos
For Discussion
Students can use the calculators to discuss the mirror imagery of a trigonomet-
ric function and its inverse across y = x, and the composition of a trigonometric
function with its inverse. Demonstrate to the students the location of inverse
secant, inverse cosecant, and inverse cotangent within the MATH menu.
Additional Problems
Compute the following:
( - .7) =
-1
1. sin
-1
2. cos (.5) =
( - 2) =
-1
3. tan
( - 2) =
-1
4. csc
-1
5. sin (.2) =
( - .6) =
-1
6. cos
-1
7. tan (3) =
-1
8. cot (3) =
-1
9. sec (1.5) =
22 Inverse Trigonometric Functions/TRIGONOMETRY USING THE SHARP EL-9600
-1
x for Y1 by pressing 2ndF
-1
x.
_______________ degrees
_______________ degrees
_______________ degrees
_______________ degrees
_______________ radians
_______________ radians
_______________ radians
_______________ radians
_______________ radians
CL to access and clear the Y1
-1
cos X/ /T/n ENTER .