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| 22 Apr 2014 12:05 AM |
I can't wait any longer until I get to highschool and they start teaching trig, but right now I'm in 6th grade and I need to figure out how to use trigonometry for my own projects.
I've been using KhanAcademy to learn about unit circles and stuff, but they don't really explain the stuff I need to know, like how to get the angle from a GUI's position to the mouse's position. (I've been watching the videos but I don't know how to apply my knowledge.) So can anybody here help me learn this stuff, because I'm not gonna wait 4 years for it. I know you guys are smart and can help me :P so please do. Thanks!
P.S.
#inb4flamed |
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Devoi
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| Joined: 09 Jun 2013 |
| Total Posts: 5387 |
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| 22 Apr 2014 12:38 AM |
| Thanks now I know trigonometry! |
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| 22 Apr 2014 02:53 AM |
| Well trigonometry is the study of right triangles hence the name Trigo meaning triangle and Nometry meaning the study of something. |
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| 22 Apr 2014 09:48 AM |
| Look for more sources online, and ask specific questions on various forums. Then just study what you learn. |
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kubuto2
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| Joined: 16 Jul 2008 |
| Total Posts: 1275 |
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| 22 Apr 2014 06:44 PM |
|\ |_\ |__\ |30_\ |____\ SohCohToa |_____\ |______\ Trig, is like counting to 180, |_______\ but with triangles. |________\ |_________\ Some equations too. |__________\ |________60_\ There is no such math in programming, |_|__________\ unless you wan't to make something cool. |
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morash
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| Joined: 22 May 2010 |
| Total Posts: 5834 |
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| 22 Apr 2014 09:09 PM |
"SohCohToa"
Isn't it SohCahToa?
Sine = Opposite/Hypotenuse Tangent = Opposite/Adjacent Cosine = Adjacent/Hypotenuse |
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kubuto2
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| Joined: 16 Jul 2008 |
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crossbar
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| Joined: 08 Dec 2009 |
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| 23 Apr 2014 04:15 PM |
I'm the trig master. ;)
f = 1/5 period = 1/5 |
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Leeav
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| Joined: 07 Sep 2006 |
| Total Posts: 1905 |
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| 23 Apr 2014 05:04 PM |
| https://www.youtube.com/watch?v=F21S9Wpi0y8 |
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| 23 Apr 2014 08:02 PM |
ehh you need to know about opposite and adjacent in a right triangle even before I can lecture you. Also, visuals would be great. SohCahToa |
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gijsbel11
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| Joined: 07 Feb 2009 |
| Total Posts: 4223 |
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| 24 Apr 2014 02:58 AM |
To get the angle between two points you need to know the right angle triangle between those points and then use the inverse tanges = atan2(o,a):
point1 = {100,50) point2 = (200,90) trianglex = point2[1]-point1[1] triangley = point2[2]-point1[2] angle = atan2(triangley,trianglex)
in this example we calculate the angle from point1 TO point 2, not the reverse. |
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