John did you receive my PM?
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John did you receive my PM?
Well! Gabriel and John made the same mistake. I think that it's a mistake because I said that I seemy reflection not myself in the mirrors.
Gabriel you're wrong there is only one radius possible.
who will give me the correct answer?
Oh. Surrounded by mirrors. Ok, the radius of the mirror circle is 185m, and the radius of the circle you're moving on is 180m.
well...Quote:
Originally posted by SeventhStar
who will give me the correct answer?
Is it 33.33 minutes then?
nope. much more.
Oups, I've not made this kind of calculation for years, so I got completly mixed up and lost. I'll try with 1909.85. But if it's correct, the point should go to Gabriel as he gave all the information needed to solve the problem (except a basic trigonometry course ;) ).
Uf, I'm having the same error, Elrond. I came to the same 33.33 result, and I can't find my mistake. What am I doing wrong? :confused:
3819.71 minutes
Just found out my answer is exactly double to that of Elrond. Elrond, check if you haven't multiplied by 180/(2*pi) instead of 180/pi. And by the way, is codeguru slow again or is it just my computer?
:D :D
I have tried again, searching for some basic trigonometric notions, and then I came up to 1910.8 minutes. Elrond, it seems that I'm going just one step behind you all the time!
(I hope this sentence exists in English, in Spanish it does)
:D
Simon, I got the same result and I multiplied by 360/(2*pi), but I can be wrong in any other of the steps.Quote:
Originally posted by Simon666
Just found out my answer is exactly double to that of Elrond. Elrond, check if you haven't multiplied by 180/(2*pi) instead of 180/pi. And by the way, is codeguru slow again or is it just my computer?
And, yes, for me Codeguru is dreadfully slow since yesterday. I thought it was my computer. :)
Just received it now. I'm not sure what you mean by seeing "myself" instead of "my reflection" but if you mean what I think you mean then the answer is 31.83 hours or approx 1909.86 minutesQuote:
Originally posted by SeventhStar
John did you receive my PM?
Mirror circle diameter = 185 = (365+5)/2 m
Mirror circle radius = 92.5 = 185/2 m
Observer circle radius = 92.5 - (5/2) = 90 m
Observer speed = 1 '/min = 1°/60 min
Observer angle made after 100 m:
- In rad : 100 m / 90 m =10/9 rad
- In degrees : 10/9 * 180/pi = 200/pi °
Time necessary:
200/pi ° / (1°/60 min) = 3819.7 min