9
Basic Keyboard/GENERAL MATHEMATICS USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
Put the calclator in radian mode by pressing 2ndF SETUP B 2 .
1. Find sin 2.1.
STEP 1: Press to access the calculation screen.
STEP 2: Enter sin 2.1 by pressing MATH Α 1 2
.
1.
STEP 3: Calculate by pressing the ENTER key.
The answer is .8632
2. Find cos (
-
1.7).
STEP 1: Enter 3 cos (
-
1.7) by pressing 3 MATH Α 2
(−)
1
.
7.
STEP 2: Calculate by pressing the ENTER key.
The answer is
-
.3865
3. Find tan 0.
STEP 1: Enter tan 0 by pressing MATH Α 3 0 .
STEP 2: Calculate by pressing the ENTER key.
The answer is zero.
TRIGONOMETRIC FUNCTIONS (continued)
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+
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