Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20091019 00:25:38
how to find sin 5 degreesHello! #3 20091019 19:02:40
Re: how to find sin 5 degreesThank you for the help! #5 20091020 03:06:51
Re: how to find sin 5 degreesUsing a calculator is indirectly using series, which isn't allowed in the question. Why did the vector cross the road? It wanted to be normal. #6 20091020 15:42:51
Re: how to find sin 5 degreesHi; Last edited by bobbym (20091020 15:53:51) In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #7 20091101 20:30:47
Re: how to find sin 5 degreesHi vishalbhai; Last edited by bobbym (20091101 20:35:23) In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #8 20091101 23:10:34
Re: how to find sin 5 degreesThe following recursive algorithm will do it without any table lookup, and could be done by hand without having to do anything but multiply, subtract, and divide It should be pretty fast, since dividing by 3 on each step will drop the argument to arbitrarily small size in logarithmic time. Of course, don't compute sin(x/3) twice in every iteration! Here's a proof that it works: Last edited by betterthangauss (20091101 23:13:05) #11 20121109 09:17:51
Re: how to find sin 5 degreesHi; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #12 20121110 02:52:21
Re: how to find sin 5 degreesHmm.....Without a series or a table? Code:Draw a right angled triangle with :theta = 5, and find the ratio of the Perpendicular and Hypotenuse
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #13 20121110 08:21:34
Re: how to find sin 5 degreesThat idea is actually not so goofy anymore. You could use geogebra! In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #14 20121110 13:48:18
Re: how to find sin 5 degreesOf Course , But what should be the real solution? 'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.' 'God exists because Mathematics is consistent, and the devil exists because we cannot prove it' 'Who are you to judge everything?' Alokananda #15 20121110 15:19:23
Re: how to find sin 5 degreesHi Agnishom; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 