Graphical Verification Of Formulas And Identities - Sharp EL-9600 User Manual

NAME _____________________________________________________ CLASS __________ DATE __________
3.1

GRAPHICAL VERIFICATION OF FORMULAS AND IDENTITIES

1. Verify the double angle formula sin 2 = 2 sin
(2x) and Y2 = 2 sin x cos x and show that they are in fact the same graph.
2. Turn the calculator on and press Y= . Press CL to clear Y1 of an old
expression. Press
3. Make sure the calculator is in radian mode by pressing 2ndF
touch B DRG, and double touch 2 Rad. Press 2ndF
4. Now enter sin (2x) for Y1 by pressing sin
and the 2 sin x cos x for Y2 by pressing 2
ENTER .
5. Set your viewing window by pressing WINDOW
the screen, touch 6 - 2 <X,<2 , touch
CL to clear additional expressions.
on the screen, and touch 5 - 5<Y<5.
Blackline Masters/TRIGONOMETRY USING THE SHARP EL-9600
cos , by graphing Y1 = sin
SET UP ,
QUIT to exit the menu.
( 2 X/ /T/n )
sin X/ /T/n cos
EZ , touch 5, touch
ENTER
X/ /T/n
on
61