Question about Casio FX-115W Plus Calculator

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Csc, sec functions

I keep getting a error when I enter csc for a angle. ecample csc for 60 deg = error

maybe I'm pushing the wrong buttons,,,,

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  • Casio Master
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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.

Posted on Oct 03, 2009

  • k24674 Oct 04, 2009

    Correction: My TI92Plus, and the TI89Platinum do have commands for the secant, cosecant, and cotangent, but they are not accessed through dedicated keys.

  • k24674 Oct 11, 2009

    I checked the manual for the FX-115W and foun d no reference to the secant, cosecant and cotangent function. Would you care to verify what calculator you are using?

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