Datexx DS-700-30Xa owner manual Applications and Examples

APPLICATIONS AND EXAMPLES

BUSINESS

Calculate the future value of a $1000 investment compounded annually at a rate of 6% for 7 years.

FV	=	p (1+i)n
	=	1000 (1+0.06)7
	=	1503.63
Press		Display

1 [+] 0.06 [=] [xy] 7[=]	1.503630259
[×] 1000 [=]	1503.630259

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-

onds (g=32.2 ft/sec2)?

Velocity:	V = Vo – gt
	= 75 – (32.2 × 1.6)
	= 23.48 ft/sec.
Height:	S = Vot – 1/2 gt2
	= (75 × 1.6) – (1/2 x 32.2 × (1.6)2)
	= 78.784 ft.

Press	Display
75 [–] 32.2 [×] 1.6 [=]	23.48
75 [×] 1.6 [–] 2[1/x] [×]	0.5
32.2 [×] 1.6 [x2] [=]	78.784
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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	Display
DEG	5.7 [÷]	5.7
	30 [sin]	.5
	[=]	11.4

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

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