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#26 2009-10-29 11:56:27
- juststickman
- Scratcher
- Registered: 2009-05-31
- Posts: 1000+
Re: Formula for Sine and Cosine
Lucario621 wrote:
I've been wondering . . . is there any formula to find out sine or cosine of a direction without using the math block? Because inside that block there has to be a formula . . . but what is it? I mean I have and explanation of sine right here:
___+++++++++___
-+++++++ + +++++++-
-+++++ + | +++++-
-++++ + | ++++-
-+++ o | +++-
-++++ | ++++-
-+++++ | +++++-
-+++++++ | +++++++-
___++++++++|___
|
-1 -0.5 0 | 0.5 1
|--------------------------------------------------------|
Well it took me 15 min to make, but it was worth it I guess even though I made a horrible circle. As you can see, the direction is about 15 degrees. So the line goes in that direction starting in the middle 'til it touches the circle/oval(sadly) and then the line goes strait down. Now on the number-line it is at about 0.2 so you could say sine of 15=0.2. For cosine the number line would go on the right. and cosine of 15 would be maybe 0.85 I'm guessing. But please, tell me if there is a formula for finding sine or cosine of a direction.
I think it was something like direction multiplied by some number like 0.8909 or something...
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