Question about Texas Instruments TI-30XA Calculator

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If you remember that by definition cot(theta)=1/tan(theta) your expression can be calculated as 28/tan(30). Use parentheses if necessary to enclose the whole tan(30) factor.

Before calculating any trigonometric function make sure that the angle unit is set correctly. In your case I presume that 30 means 30 degrees. Use the [DRG] key to cycle through the angle units.

Posted on Aug 23, 2010

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Posted on Jan 02, 2017

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I believe factors can be calculated on any basic calculator.

Starting with 1, increasing by 1 until you get to square root (number) + 1

Let's do an example.

28

square root (28)+1 = 6

Factors

1, 28/1=28

2, 28/2=14 14*2 - 28 = 0 (when you divide, you get no decimal)

3, 28/3=9.33333 - not a factor - doesn't go in evenly

4, 28/4 =7

5, 28/5=5.6 - not a factor - doesn't go in evenly

6, 28/6=4.66666 - not a factor

So now we can list our factors - 1, 28, 2, 14, 4, 7

Putting them in order, we get 1, 2, 4, 7, 14 and 28.

Good luck,

Paul

Starting with 1, increasing by 1 until you get to square root (number) + 1

Let's do an example.

28

square root (28)+1 = 6

Factors

1, 28/1=28

2, 28/2=14 14*2 - 28 = 0 (when you divide, you get no decimal)

3, 28/3=9.33333 - not a factor - doesn't go in evenly

4, 28/4 =7

5, 28/5=5.6 - not a factor - doesn't go in evenly

6, 28/6=4.66666 - not a factor

So now we can list our factors - 1, 28, 2, 14, 4, 7

Putting them in order, we get 1, 2, 4, 7, 14 and 28.

Good luck,

Paul

Jul 13, 2016 | Texas Instruments TI-30 XIIS Calculator

Use the cosine, sine, and tangent buttons on your calculator and invert them with x ^ -1 key.

For example, csc = 1/sin. So for csc 30 degrees, so sin 30 degrees, then hit the x^-1 key.

Good luck.

Paul

For example, csc = 1/sin. So for csc 30 degrees, so sin 30 degrees, then hit the x^-1 key.

Good luck.

Paul

Nov 10, 2015 | Casio FX-82MS Scientific Calculator

Calculate it yourself: Place a straight edge across the top of the unit. Measure the height from the bottom of the tub to the bottom of the straight edge. Then measure the width of the inside center of the tub and take half that number. Then use the formula below to calculate it. For example. Height 30 inches, Width 28 inches (half of 28 = 14).

V = (3.1416 x (14 x 14) x 30)/1728

= (3.1416 x 196 x 30)/1728

= 18498.48/1728

= 10.70 cubic feet.

V = (3.1416 x (14 x 14) x 30)/1728

= (3.1416 x 196 x 30)/1728

= 18498.48/1728

= 10.70 cubic feet.

Mar 02, 2015 | Maytag Washing Machines

Use the equivalent definition

**cot(x) =1/ tan(x)**

May 02, 2014 | Texas Instruments TI-84 Plus Calculator

SEC, CSC & COT are the INVERSE of COS, SIN & TAN and are usually require hitting the "2nd F" or "Func" key of the calc to make:

SIN button work as COSEC,

COS button work as SEC

TAN button work as COT

Formulas are below:

sec x = __1 __

cos x

cosec x = __ 1
__

sin x

cot x = __ 1 __ = __cos x__

tan x sin x

Good luck!

Feb 05, 2013 | Sharp EL531 Scientific Calculator

Well it depends. If the hexagon is irregular (sides are not equal) there is no formula to calculate the sides as they can have arbitrary values. You must measure them.

If the hexagon is regular you may be able to relate the measure of a side to the radius of the circle in which it is inscribed. If you have the radius of the circle, the side is equal to the radius. If you have the value of perimeter you divide that value by 6.

There is also a formula that relates the area of the hexagon to the measure of the side s. The formula is Area=(6/4)(s^2)cot(PI/6), where cot is the cotangent function, its angle is in radian. In degrees Pi/6 is 30 degrees.

If the hexagon is regular you may be able to relate the measure of a side to the radius of the circle in which it is inscribed. If you have the radius of the circle, the side is equal to the radius. If you have the value of perimeter you divide that value by 6.

There is also a formula that relates the area of the hexagon to the measure of the side s. The formula is Area=(6/4)(s^2)cot(PI/6), where cot is the cotangent function, its angle is in radian. In degrees Pi/6 is 30 degrees.

Dec 31, 2011 | Office Equipment & Supplies

well there is no cot function on this calculator so you have to use the identity. Cot is 1/tan so the inverse cot is 1/inverse tan which is on this calculator so = 1/arctan(-4)

Mar 08, 2011 | Casio FX-270W Calculator

Use the relation cot(30) =1/tan(30).

Press [DRG] to set the correct angle unit (degree, radian, or grad). If you are working with degrees the DEG display indicator should appear on screen

You then type

28 [/] ( 30 [TAN] ) =

Press [DRG] to set the correct angle unit (degree, radian, or grad). If you are working with degrees the DEG display indicator should appear on screen

You then type

28 [/] ( 30 [TAN] ) =

Aug 27, 2010 | Texas Instruments TI-30XA Calculator

The calculator doesn't have those functions built-in. Use the relationships sec(x) = 1/cos(x), csc(x) = 1/sin(x), and cot(x) = 1/tan(x).

Aug 22, 2010 | Casio FX-250HC Calculator

I don't have a Cot button but Cot x = 1/Tan x so enter

1/Tan 78 = 0.212556 etc if you have a fraction button you can write it that way too:

1 frac button Tan 78 = 0.212556 etc

1/Tan 78 = 0.212556 etc if you have a fraction button you can write it that way too:

1 frac button Tan 78 = 0.212556 etc

Jun 16, 2008 | Sharp EL-531VB Calculator

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