Applications And Examples; Business; Physics; Civil Engineering - Datexx DS-700-30Xa Owner's Manual

APPLICATIONS AND EXAMPLES

BUSINESS

Calculate the future value of a $1000 investment
compounded annually at a rate of 6% for 7 years.
p (1+i) n
FV =
1000 (1+0.06) 7
=
= 1503.63
Press
1 [+] 0.06 [=] [x y ] 7[=]
[ ] 1000 [=]

PHYSICS

If a ball is thrown upward with a velocity of 75 feet
per second, what is its velocity at the end of 1.6 sec-
(g=32.2 ft/sec 2 )?
onds
Velocity: V = Vo – gt
= 75 – (32.2
= 23.48 ft/sec.
S = Vot – 1/2 gt 2
Height:
= (75 1.6) – (1/2 x 32.2
= 78.784 ft.
Press
75 [–] 32.2 [ ] 1.6 [=]
75 [ ] 1.6 [–] 2[1/x] [ ]
32.2 [ ] 1.6 [x 2 ] [=]
22
Display
1.503630259
1503.630259
1.6)
(1.6) 2 )
Display
23.48
0.5
78.784

CIVIL ENGINEERING

In this right triangle,A = 5.7 feet and a = 30 degrees.
Determine the value of C.
sin a = A / C
sin 30 degrees = 5.7 / C
C = 5.7 / sin 30 degrees
C = 5.7 / .5
C = 11.4
Mode Press
DEG 5.7 [÷]
30 [sin]
[=]
In this right triangle,
A = 6 feet and C = 15 feet.
Determine the values of a, b and B.
sin a = A / C
sin a = 6 / 15 = 0.4
sin –1 .4 = 23.58
a = 23.58 degrees
b = 90 – 23.58 = 66.42 degrees
cos a = B / C
cos 23.58 = B / 15
B = cos 23.58 15
B = .9165 15 = 13.7475 feet
Display
5.7
.5
11.4
23