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A little math help here? Wolfram Alpha is being bloody awkward at me...
side is 1 mile long, and the other side is 24 cm long. What are the
other two angles??
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On 11/24/09 09:13, Invisible wrote:
> A little math help here? Wolfram Alpha is being bloody awkward at me...
>
> side is 1 mile long, and the other side is 24 cm long. What are the
> other two angles??
That depends on whether one of those sides is the hypotenuse.
--
"Graphic Artist seeks Boss with vision impairment."
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> A little math help here? Wolfram Alpha is being bloody awkward at me...
>
> side is 1 mile long, and the other side is 24 cm long. What are the other
> two angles??
Google "(24 cm / 1 mile) in degrees".
If you want more accuracy then it's going to depend on whether the 1 mile
side is the one opposite the 90 degrees or not.
Google:
"asin(24 cm / 1 mile) in degrees"
or
"atan(24 cm / 1 mile) in degrees"
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>> A little math help here? Wolfram Alpha is being bloody awkward at me...
>
> Google "(24 cm / 1 mile) in degrees".
Ah, good old Google calculator. It may not know how to compute the
Riemann zeta function, but it at least manages to do common math
operations. :-D
Apparently it's 0.00854446724 degrees, which is about 30 seconds. That's
some pretty fricken tiny angle!
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On Tue, 24 Nov 2009 16:13:36 +0100, Invisible <voi### [at] dev null> wrote:
> A little math help here? Wolfram Alpha is being bloody awkward at me...
>
> side is 1 mile long, and the other side is 24 cm long. What are the
> other two angles??
http://en.wikipedia.org/wiki/Right_triangle#Trigonometric_ratios_in_right_triangles
--
FE
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Invisible wrote:
> Apparently it's 0.00854446724 degrees, which is about 30 seconds. That's
> some pretty fricken tiny angle!
According to Wikipedia:
"20/20 is the visual acuity needed to discriminate two points separated
So I guess 30 seconds (0.5 minutes) could plausibly be within the range
of normal human vision then.
I just noticed the other night that as I passed under a sign telling me
the motorway exit was in 1 mile, I could already see the green traffic
lights beyond the exit. And those lights can't be much more than 24cm
across...
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Fredrik Eriksson <fe79}--at--{yahoo}--dot--{com> wrote:
> On Tue, 24 Nov 2009 16:13:36 +0100, Invisible <voi### [at] devnull> wrote:
> > A little math help here? Wolfram Alpha is being bloody awkward at me...
> >
> > side is 1 mile long, and the other side is 24 cm long. What are the
> > other two angles??
> http://en.wikipedia.org/wiki/Right_triangle#Trigonometric_ratios_in_right_triangles
This is basic trigonometry which is taught in high schools in most places.
--
- Warp
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> "20/20 is the visual acuity needed to discriminate two points separated by
>
> So I guess 30 seconds (0.5 minutes) could plausibly be within the range of
> normal human vision then.
>
> I just noticed the other night that as I passed under a sign telling me
> the motorway exit was in 1 mile, I could already see the green traffic
> lights beyond the exit. And those lights can't be much more than 24cm
> across...
Hmm, I can see an object perfectly fine with an angle of 10^-9 degrees.
Being able to see something and discriminate between two points is
different.
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Warp wrote:
> This is basic trigonometry which is taught in high schools in most places.
I did say "trivial", didn't I? ;-)
My education didn't include this information. Also, I have no idea how
many centimeters there are in one mile.
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Invisible <voi### [at] devnull> wrote:
> I just noticed the other night that as I passed under a sign telling me
> the motorway exit was in 1 mile, I could already see the green traffic
> lights beyond the exit. And those lights can't be much more than 24cm
> across...
Lights can be seen much easier than other details.
--
- Warp
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