Sharp EL-9650 - Page 71

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MANUAL CALCULATIONS
Y
Y
y
0
x
X
p(x, y)
0
X
θ
p(r, θ)
r
Rectangular coordinates
Using angle conversion and others:
The calculator has 3 angle modes: Deg (degree), Rad (radian) and Grad (gradient).
Correct calculation results cannot be achieved unless using the correct input method
for each of the modes.
This calculator is equipped with a calculation function ( ≥ [E ANGLE]) that allows the
use of these mode without changing settings.
The screen shown on the right will appear when ≥
E are pressed.
No. Example Key operations Answer
1 Calculates sin 30°25’3”
using the Rad mode
(calculate using Deg)
2 Calculates cos π/6 using
the Grad mode (calculate
using Rad)
3 Calculates tan 90 using
the Deg mode (calculate
using Grad)
s( 30 ≥E1 25 ≥2
3 ≥3)≥E1®
.50629718
c(Ïπ/ 6 )≥
E4®
t 90 ≥E5®
.866025403
6.313751515
Rectangular/polar coordinate conversion [D CONV]:
It is possible to convert rectangular coordinates to polar coordinates and vice versa.
Polar coordinates
Convert by pressing ≥ then inputting numerical value after one of “ xy→r(”, “xy→θ(”,
“rθ→x(”, or “rθ→y(” commands in [D CONV].
The menu screen shown to the right will appear when
pressing ≥ D are pressed.
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