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elena55 [62]
3 years ago
5

Which equation should be used to graph y=sec^-1(x) on a calculator ?

Mathematics
1 answer:
erastova [34]3 years ago
4 0
Arcsecant or arcsec or sec⁻¹ is an inverse trigonometric function. And many calculators don't have a key for them because they can be calculated with basic trigonometric functions like so:

sec⁻¹(x)=cos⁻¹(1/x). 

So the correct answer is the fourth one: y=cos⁻¹(1/x).
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