Question about Casio FX-115ES Scientific Calculator

# What should I need to press in the calculator in finding the answer of inverse of csc(2.6). can't figure out myself, can you help me?

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Arccsc(2.6) is arcsin(1/2.6), so

SHIFT sin 1 / 2 . 6 =

Make sure you're in the proper angle mode first.

Posted on Oct 12, 2010

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## Related Questions:

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The cosecant of an angle is one divided by the sine of the angle. As an example, to calculate csc(2), press SIN 2 ) x^-1 or 1 / SIN 2 =

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### Find a calculator approximation for each circular function value. csc (-9.4946) The answer in the solutions manual is 14.3338 by imputing sin (-9.4946) = .0698 ans^-1 approx. 14.3338 ?

I am not sure if there really is a question here. The cosecant function is defined as the reciprocal of the sine function : csc(x)=1/sin(x)
You can calculate two ways. [ ] is a single key press, [(-)] is the change sign key.

csc(-9.4946)=1[/][sin] [(-)] 9.4946[)] [EXE]

The other way is to just calculate sin(-9.4946). the result will be stored in ANS memory. At this time, if you press the key [x^-1] you are calculating the reciprocal of the result stored in ANS.

Both methods yield the same result.

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### I have a TI-84 Plus Silver Edition calculator and I need to find the inverse key to get values for sin, cos, tan, csc, sec, cot. I'm past the lesson where you use the 2nd/sin, cos tan to find the...

There are no keys for cosecant, secant, and cotangent. You can calculate those ratios as

csc(x) = 1/sin(x)

sec(x) = 1/cos(x)

cot(x) = 1/tan(x)

Simply calculate the trig ratio on the right and then take its reciprocal.

Dec 14, 2010 | Texas Instruments TI-83 Plus Calculator

### When do I use the x-1 key and when do I use the inverse function keys? I know inverse function keys provide cosecant, secant and cotangent, but is that all they are used for?

Use x-1 to calculate 1/x (x to the negative-one power).

What I think you're calling the inverse function keys actually calculate arcsine, arccosine, and arctangent.

To calculate cosecant x, for example, use the relationship
csc(x) = 1/sin(x)

Sep 22, 2010 | Texas Instruments TI-83 Plus Calculator

### How to solve for the trigonometric functions in the casio scientific calculator?

Press the relevant function key [SIN],[COS],[TAN] followed by the angle value.
For inverse trigonometric functions [SIN^-1], COS^-1], or [TAN^-1], Press [SHIFT][SIN], [SHIFT][COS], or [SHIFT][TAN].
For other functions
sec(x)=1/cos(x)
csc(x)=1/sin(x)
cot(x)=1/tan(x)

When calculating trigonometric functions one must make sure that the angle unit the calculator is using is the correct one.

Aug 26, 2010 | Casio FX-115ES Scientific Calculator

### Inverse Functions on Casio fx-270W PLUS don't seem to work

because cotangent, cosecant, and secant are all inverse trig functions, just type in 1 / |shift| trig function and the number if you are finding the angles. It might not be a dedicated button, but its an extra push, and it will give you the same result. *note that I put the shift press only because that is how you get the inverse tan to get an angle from a tan ratio.*

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Come on now....there are dedicated "square" and "square root" keys on the TI-30XA....

Enter your number e.g. 4, then press the "root x" key to get 2...

Press "x squared" key to get the square of 2 = 4

There's the even more useful "y to the power x" key and it's inverse "xth root of y" key.

E.g. Enter 2, then press the "y to the power x" key, then 5, then =, answer is 32 (2 x 2 x 2 x 2 x 2). Starting with 32, pres 2nd then the "y to the power x" key, then 5, then =, answer is 2, the 5th root of 32....

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### Csc, sec functions

Hello,
I have not yet seen a calculator that has a dedicated key for the cosecant , secant, nor cotangente functions, because they are directly connected with the sine, the cosine, and the tangente.

Cosecant (x) = 1/sin(x)
Secant (x) = 1/cos(x)
Cotangente(x) = 1/tan(x)

Do not confuse these functions with the inverse trigonometric functions, usually represented as
arccosine = arccos; on calculators cos^-1,
arcsine = arcsin ; on calculators sin^-1
arctangent= arctan ; on aclculators tan^-1

Hope it helps.

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First to solve a problem, write it like this

solve(3/x-2+21/x^2-4=14/x+2,x)

Second, for inverse, do this (note the "y=" part)

solve(y=3x^2 -2x+1,x)

The calculator will rewrite the formula as x = ...

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