Re: Perhaps this is a dumb question...
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Kenneth Fink wrote:
> you're in 11th grade and still don't know trig...ill try to explain
That wasn't a particularly nice comment. There was no need
to launch an attempt at making another person feel stupid.
> sin^-1(x) is the inverse sin of x, not the reciprocal of sin(x) which
> is csc(x). The sin^-1(x) is saying that sin(x) = y , and taking the
> inverse sin of both sides will give you x.
This is pretty much correct. However, I hope you're not trying to say
that
Arcsin(sin(x))=x, as you seem to be. This is only true in the interval
[-pi/2,pi/2].
Besides, as someone else had pointed out, this notation isn't exactly
intuitive.
> hope that helps.. if not, keep on learning your math.
We should all keeping learning our math, myself included...
- Paul Pollack
TI-Graphing Calculator Magazine Senior Editor
TI-GCM : http://users.aol.com/timagazine/
home page: http://home1.gte.net/paulp/
paulp@gte.net
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