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DISPLAY SHOWS " COS 30 " AND STOPS COPYING - Office Equipment & Supplies

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What is the make and model of your copy machine?

Posted on Oct 11, 2010

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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My house roof has an area of 120 sq meter and slope degree of 30' how many linear meter my roof has?


the area of your roof is equal to the base (B) times the hight (H) divided by 2.
A = ( B x H )/ 2 = 120
To get the Perimeter of your roof you need to sum the base plus the sides (S)
So P = B + 2 x S


if you have a slope degree of 30 then
B/2 = cos (30) x S
so P = B + 2 x B / 2 / cos(30)
P = B ( 1 + cos (30) )
we also know that
H = tg (30) x B/2
from this last one we can go back to the Area and get a value for B
120 = ( tg (30) x B / 2 x B) / 2
480 x SQRT(3) = B^2
B = SQRT(480/tg(30))

So:
P = SQRT(480/tg(30)) x ( 1 + cos (30))
tg (30) = 1 / SQRT(3) cos (30) = SQRT(3)/2
P = 2 SQRT(30 x (12 + 7 x SQRT(3) ) ) or aproximately 53.8m

Mar 03, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How to use calculator on how to evaluate trigonometric functions


The FX-115ES is somewhat different to other calculators you might know. The sequence of keys is more like writing up a calculation in a textbook, whereas for "normal" calculators operations are reversed in some places.
For example, with most calculators you would type 30 [sin] to calculate the sine function of 30 degrees, with the 115ES its [sin] 30 [=].

The 115ES has all the standard trigonometric functions:
  • Standard functions (sin, cos, tan), type the [sin], [cos] or [tan] key followed by the argument.
  • Inverse trigonometric (sin?¹, cos?¹, tan?¹), type [SHIFT][sin], [SHIFT][cos] or [SHIFT][tan] followed by the argument.
  • Hyperbolic functions (sinh, cosh, tanh), type [HYP][sin], [HYP][cos], or [HYP][tan] followed by the argument.
  • and finally inverse hyperbolic (sinh?¹, cosh?¹, tanh?¹), its [SHIFT][HYP][sin], [SHIFT][HYP][cos], or [SHIFT][HYP][tan] followed by the argument.
Arguments can be given as numbers with mantissa (2.718), as fractions (use the fraction key below [CALC]) or as degree, minute, second (30°12'45") using the [°'"] key for input. To switch between degrees (1 circle = 360°), radians (1 circle = 2?), or grad (1 circle = 400 gon), use [SHIFT][DRG>].

Jan 06, 2011 | Casio FX-115ES Scientific Calculator

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Which numbers can i press when i get error c-6, 400 om a KM-1620 photocopier?


Put the machine on and press 1087, 1087 until the display shows U000. Press 163 and the press start .display shows CLE, press start again. The machine will initialize and become ready for copying

Nov 15, 2010 | Kyocera Copystar CS-1620 Black and White...

1 Answer

How do i calculate cos 30°24'


You must first set angle unit to degree.
Press the [MODE] key a certain number of times until you get to a screen that displays Deg Rad Grad. Press number key 1 to select degree.
Once this is done you can calculate trigonometric functions. To enter angles in DMS you have a key marked with degree symbol, a quotation mark, and a double quotation mark. In what follows that key is represented as DMS.

To calculate cos(30 deg 24')
[COS] 30 [DMS] 24[DMS] [=]

If you get an error message you will have to enter the seconds even if the value is 0
[COS] 30 [DMS] 24[DMS] 0 [DMS] [=]

Sep 11, 2010 | Casio FX-300MS Calculator

1 Answer

Cos30-cos40=0 sin30+sin40=980


Is this a joke or what?
cos(30 deg)-cos(40 deg)=0.0999809607
sin(30 deg)+sin(40 deg)=1.14278761

And even if your functions are hyperbolic functions
the first expression cannot give 0 otherwise 30 would be equal to 40, and no reasonable person would expect that.

sinh(30)+sinh(40)=1.176979767 x 10^17

Aug 02, 2010 | Office Equipment & Supplies

2 Answers

How do you use the sin-1


You would press on the SIN key, "sin(" should come on the display, then enter the value, for example 3.5 or -1 so that the display shows

sin(3,5) or sin(-1) for example.

remember to close the sin with the ) on the end.
sin(-1) = -0.841470985

Feb 16, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

How to use the cosine,tangent etc functions of calculator fx-82ES plus


Hello,
1.Set the correct angle unit required by your problem: degrees, radians, or grads. [SHIFT][MODE] [3:deg] or [4:Rad]

2. Press the key for the function COS, SIN, or TAN
[COS] displays Cos(

3.Enter the angle 12 deg Screen shows cos(12
Close the right parenthesis ) Screen shows cos(12)
4.Press [=] Screen displays 0.9781

If you want the inverse trigonometric functions you access them with arccos [SHIFT] [COS] (cos^-1)
arcsin [SHIFT][SIN] (sin^-1)
actan [SHIFT][TAN] (tan^-1)

You have to know the principal domain for the inverse trigonometric functions (see any book on trigonometry) to understand the results.
Hope it helps.

Nov 05, 2009 | Casio Office Equipment & Supplies

1 Answer

After approx. 30 min. of walking on full speed it


I had this happen on our machine after about 5 years of use. I just recalibrated it and it appears to be working fine now. See the manual for information on the steps needed to take in order to do this.

Jul 11, 2009 | Bowflex Treadclimber

1 Answer

DVD stops recording after about 30 seconds


If the take up reel is not working properly the slack in tape drive will cause poor recordings and shut downs.

Sep 13, 2017 | Insignia IS-DVD1001 DVD Recorder/VCR

1 Answer

TI-83Plus


Make sure you are set to degrees, radians, or grads, whichever angular measurement you are using.

The DRG key toggles through the three modes of input, and the display shows which you are in.

30 SIN will give the correct 0.5 answer if you are set to use DEG.

Set to RAD and since 30 degrees = (30)(pi)/180= 0.52234 rad, set to RAD and 0.52234 SIN also gives you the correct 0.5 result

May 06, 2008 | Texas Instruments TI-30XA Calculator

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