Re: arcsin(arccos(arctan(tan(cos(sin(9))))))

Guy Macon <http://www.guymacon.com/> writes:
On the Calculator Forensics page,
[ http://www.rskey.org/~mwsebastian/miscprj/forensics.htm ]
the following formula is used to test calculators:

arcsin(arccos(arctan(tan(cos(sin(9))))))

Alas, some calculators (including the one that you get when
you copy the above equation into Google) only calculate trig
functions in radians.
See [ http://www.rskey.org/~mwsebastian/miscprj/radians.htm ]

Does anyone have a better method for running the Calculator
Forensics test on a radians-only calculator?

arcsin(arccos(arctan(tan(cos(sin(1))))))

is at least as good.

It only tests the first quadrant, but tests more
of it than the original did.

Phil
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