Question about Ingenico I6550 (6550US0041)

Root 2

Posted on Dec 04, 2008

The answer is Square root of 2. ( )

They way it works is :

sec theta at 45 degre is 1 over cosine of theta or

cosine of theta is square root of 2 over 2.

Therefore you have 1 over square root of 2 over 2.

After rationalization and simplification you should have .

Posted on Aug 21, 2008

It is 2/the square root of 2

Posted on May 09, 2008

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Posted on Jan 02, 2017

Since this calculator cannot perform symbolic manipulations (algebra) you never need to type in sin(theta) or cos(theta). To calculate the sine of an angle (whatever the name of the angle may be) just press the **sin** key followed by an angle value and the function will be calculated. same thing with any other trigonometric function.

Make sure that the angle units is set to the unit required by your calculation: degree, radian, or grad.

Make sure that the angle units is set to the unit required by your calculation: degree, radian, or grad.

Jul 16, 2014 | Office Equipment & Supplies

To calculate the Cosine of an angle, you first make sure that the angle unit on your calculator is set to the correct one (degree, or radian). After that it is all simple. Enter the angle value (50 degrees) then press the [COS] key. If you get an error then press the COS key followed by the angle value then press =.

Note if your calculator display Cos ( , with a left parenthesis, then you have to press COS first followed by the angle value and possibly the right parenthesis.

Note. The theta here is of no relevance.

Note if your calculator display Cos ( , with a left parenthesis, then you have to press COS first followed by the angle value and possibly the right parenthesis.

Note. The theta here is of no relevance.

May 27, 2013 | Casio FX350MS Scientific Calculator

If you have learned about the trigonometric ratios (sine, cosine and tangent) you can use the tangent of the angle.

Let your run be to the right ( along the positive x-axis) and the rise be upwards along the positive y-axis. The tangent of the angle is

tan (theta)=rise/run=7.5/12

If the calculator is set with angle unit in degrees, the angle is obtained as the arc tangent of the (rise/run) value.

theta= arctan(7.5/12)=32.00538321 or about 32 degrees.

The arctan is the inverse of tan. To access it on the calculator press [2nd F][tan]

Depending on the calculator (sorry I do not have your model under my eyes)

Press**[2nd F][tan] ( 7.5/12) [=] **

or

**7.5/12 =** then** [2nd F][tan] [ALPHA][Ans] [=]**

Let your run be to the right ( along the positive x-axis) and the rise be upwards along the positive y-axis. The tangent of the angle is

tan (theta)=rise/run=7.5/12

If the calculator is set with angle unit in degrees, the angle is obtained as the arc tangent of the (rise/run) value.

theta= arctan(7.5/12)=32.00538321 or about 32 degrees.

The arctan is the inverse of tan. To access it on the calculator press [2nd F][tan]

Depending on the calculator (sorry I do not have your model under my eyes)

Press

or

Jan 21, 2012 | Sharp Office Equipment & Supplies

If you have learned about the trigonometric ratios (sine, cosine and tangent) you can use the tangent of the angle.

Let your run be to the right ( along the positive x-axis) and the rise be upwards along the positive y-axis. The tangent of the angle is

tan (theta)=rise/run=7.5/12

If the calculator is set with angle unit in degrees, the angle is obtained as the arc tangent of the (rise/run) value.

theta= arctan(7.5/12)=32.00538321 or about 32 degrees.

The arctan is the inverse of tan. To access it on the calculator press [2nd F][tan]

Depending on the calculator (sorry I do not have your model under my eyes)

Press**[2nd F][tan] ( 7.5/12) [=] **

or

**7.5/12 =** then** [2nd F][tan] [ALPHA][Ans] [=]**

Let your run be to the right ( along the positive x-axis) and the rise be upwards along the positive y-axis. The tangent of the angle is

tan (theta)=rise/run=7.5/12

If the calculator is set with angle unit in degrees, the angle is obtained as the arc tangent of the (rise/run) value.

theta= arctan(7.5/12)=32.00538321 or about 32 degrees.

The arctan is the inverse of tan. To access it on the calculator press [2nd F][tan]

Depending on the calculator (sorry I do not have your model under my eyes)

Press

or

Jan 21, 2012 | Sharp EL-501WBBL Calculator

I**t is most likely that the angle unit is not set to correspond to the angle unit you are using in your problems.** If your problems call for angle unit in degrees, set the calculator to do its calculations in degrees. If your problems require the radian angle unit, set your calculator accordingly.

Jan 12, 2012 | Casio FX82MS Scientific Calculator

3.10 km times sine of 25 degrees is about 1.31 km.

3.10 km times cosine of 25 degrees is about 2.81 km.

The person would have to walk 1.31 km north and 2.81 km east.

Since you didn't specify the make and model of your calculator, I'm afraid I can't give you the keystroke sequences to calculate these results.

3.10 km times cosine of 25 degrees is about 2.81 km.

The person would have to walk 1.31 km north and 2.81 km east.

Since you didn't specify the make and model of your calculator, I'm afraid I can't give you the keystroke sequences to calculate these results.

Jul 04, 2011 | Office Equipment & Supplies

Before graphing deactivate the statistical plots: Press [2nd][Y=] to access the (STAT PLOTS) configuration screen and press [4:PlotsOff][ENTER]

To draw polar graph, make sure in MODE, POL is highlighted.

Make sure that the angle unit is set to RADIAN

If you want the angle unit to be in degrees you must open the WINDOW editor to modify the values of Theta max to a significant value: 30, 45, 60, 90, 120, 180, 360, otherwise the calculator will take the default value 6.28 (2*PI) in degrees

To draw polar graph, make sure in MODE, POL is highlighted.

Make sure that the angle unit is set to RADIAN

If you want the angle unit to be in degrees you must open the WINDOW editor to modify the values of Theta max to a significant value: 30, 45, 60, 90, 120, 180, 360, otherwise the calculator will take the default value 6.28 (2*PI) in degrees

May 25, 2010 | Texas Instruments TI-84 Plus Calculator

You can perform coordinate conversions in the COMP, STAT, MATRIX and VECTOR Modes.

Angle unit may be in either degree or radian.

To convert from rectangular to polar, (SQRT(2)/2,SQRT(2)/2)

Press [SHIFT] [+] (Pol)

Screen displays Pol(

Type in SQRT2

Use right arrow to move cursor out of radical

Type in /2 [SHIFT] [,]

Type in SQRT2

Use right arrow to move cursor out of radical

Type in /2

Close the right parenthesis

Screen displays Pol (SQRT2 /2, SQRT2 / 2)

Press [=]. Display echoes the command on top line and result in bottom line as r=1, theta =45, (if unit is in degree) or theta = 0.7853981634 if unit is radian.

To convert from polar to rectangular coordinates

Note: You cannot use the answer memory to convert back to rectangular because the calculator will use the r-value only. So you will have to enter the radius AND the angle.

ex: Rec(1,45)

Angle must be in degree

Press [SHIFT][-] (Rec)

Screen display Rec(

Type in 1 [SHIFT] (,) 45 [)] [=]

Calculator displays X=0.7071067812, Y=0.7071067812

If you press the SD key hoping to convert the decimals to radicals, the calculator will not do it.

As to the "confusion", I have found none.

After you finish entering the argument of a square root, use the right arrow to move cursor out of under the root symbol to signify that the argument is complete. If you use a left parenthesis inside the root, you must insert the matching right parenthesis inside the root, then move cursor outside the root.

This is how the calculator behaves, and I am not expressing an opinion on how simple or complicated that is. I assume that to make full use of the calculator capabilities, one has to converse with it, using the syntax it understands.

Angle unit may be in either degree or radian.

To convert from rectangular to polar, (SQRT(2)/2,SQRT(2)/2)

Press [SHIFT] [+] (Pol)

Screen displays Pol(

Type in SQRT2

Use right arrow to move cursor out of radical

Type in /2 [SHIFT] [,]

Type in SQRT2

Use right arrow to move cursor out of radical

Type in /2

Close the right parenthesis

Screen displays Pol (SQRT2 /2, SQRT2 / 2)

Press [=]. Display echoes the command on top line and result in bottom line as r=1, theta =45, (if unit is in degree) or theta = 0.7853981634 if unit is radian.

To convert from polar to rectangular coordinates

Note: You cannot use the answer memory to convert back to rectangular because the calculator will use the r-value only. So you will have to enter the radius AND the angle.

ex: Rec(1,45)

Angle must be in degree

Press [SHIFT][-] (Rec)

Screen display Rec(

Type in 1 [SHIFT] (,) 45 [)] [=]

Calculator displays X=0.7071067812, Y=0.7071067812

If you press the SD key hoping to convert the decimals to radicals, the calculator will not do it.

As to the "confusion", I have found none.

After you finish entering the argument of a square root, use the right arrow to move cursor out of under the root symbol to signify that the argument is complete. If you use a left parenthesis inside the root, you must insert the matching right parenthesis inside the root, then move cursor outside the root.

This is how the calculator behaves, and I am not expressing an opinion on how simple or complicated that is. I assume that to make full use of the calculator capabilities, one has to converse with it, using the syntax it understands.

Mar 31, 2010 | Casio FX-115ES Scientific Calculator

May 12, 2014 | Ingenico I6550 (6550US0041)

Mar 08, 2014 | Ingenico I6550 (6550US0041)

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