trigonometry

Question is pretty self-explanatory. I've seen a couple of examples for pi but not for trigo functions. Maybe one could use a Taylor series as done here but I'm not entirely sure how to implement that in python. Especially how to store so many digits. I should mention: this ideally would run on vanilla python i.e. no numpy etc. Thanks! Edit: as said, I know the question has been asked before but it's in java and I was looking for a python implementation :) Edit 2: wow I wasn't aware people here can be so self-absorbed. I did try several approaches but none would work. I thought this a place

I am using NAudio to play a sinewave of a given frequency as in the blog post Playback of Sine Wave in NAudio . I just want the sound to play() for x milliseconds and then stop. I tried a thread.sleep, but the sound stops straightaway. I tried a timer, but when the WaveOut is disposed there is a cross-thread exception. I tried this code, but when I call beep the program freezes. public class Beep { public Beep(int freq, int ms) { SineWaveProvider32 sineWaveProvider = new SineWaveProvider32(); sineWaveProvider.Amplitude = 0.25f; sineWaveProvider.Frequency = freq; NAudio.Wave.WaveOut waveOut =

In C++, const double Pi = 3.14159265; cout << sin(Pi); // displays: 3.58979e-009 it SHOULD display the number zero I understand this is because Pi is being approximated, but is there any way I can have a value of Pi hardcoded into my program that will return 0 for sin(Pi)? (a different constant maybe?) In case you're wondering what I'm trying to do: I'm converting polar to rectangular, and while there are some printf() tricks I can do to print it as "0.00", it still doesn't consistently return decent values (in some cases I get "-0.00") The lines that require sin and cosine are: x = r*sin

I am terribly annoyed by the inaccuracy of the intrinsic trig functions in the CLR. It is well know that Math.Sin(Math.PI)=0.00000000000000012246063538223773 instead of 0. Something similar happens with Math.Cos(Math.PI/2) . But when I am doing a long series of calculations that on special cases evaluate to Math.Sin(Math.PI/2+x)-Math.Cos(x) and the result is zero for x=0.2, but not zero for x=0.1 (try it). Another issue is when the argument is a large number, the inaccuracy gets proportionally large. So I wonder if anyone has coded some better representation of the trig functions in C# for

I am trying to figure out whether a angle lies between 2 other angles. I have been trying to create a simple function to perform this but none of my techniques will work for all possible values of the angles. Can you help me edit my function to correctly determine if a angle lies between 2 other angles? In the above picture; I use the green point as the central point, then I determine the angle of each line to the green point. I then calculate the angle of the black point to the green point. I am trying to check if the angle of the black dot is BETWEEN the 2 lines' angles. NOTE: In my case; an

Im trying to find out the angle (in degrees) between two 2D vectors. I know I need to use trig but I'm not too good with it. This is what I'm trying to work out (the Y axis increases downward): I'm trying to use this code at the moment, but it's not working at all (calculates random angles for some reason): private float calcAngle(float x, float y, float x1, float y1) { float _angle = (float)Math.toDegrees(Math.atan2(Math.abs(x1-x), Math.abs(y1-y))); Log.d("Angle","Angle: "+_angle+" x: "+x+" y: "+y+" x1: "+x1+" y1: "+y1); return _angle; } These are my results (There constant when providing a