Generating 3 phase sine waveform

hi developers,
i want to share basic sinewaveform generator,
you can see after send code to ardunio , and check Ctrl+Shift+L

#include <math.h>
float f,y,A,B,t,pi=3.1428;
float w = 2pif;
float degree=30;
float rad,tetha1,tetha2,tetha3,Alpha=0; // Alpha derece cinsindendir

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}

void loop() {
// put your main code here, to run repeatedly:
A=1000;
f=10;
t+=(float)1/1000;
//rad=degree*(3.14/180);
A=2pift;
tetha1=(1.0/f)
(Alpha/360.0);
tetha2=(1.0/f)(120/360.0);
tetha3=(1.0/f)
(240/360.0);

y = 1000sin(2pift);
A = 1000sin(2pif(t+tetha2));
B = 1000sin(2pif(t+tetha3));

Serial.print(A,5); Serial.print(" “); Serial.print(B,5); Serial.print(” "); Serial.println(y,5);
}

Many Arduino’s have no floating point hardware and are too slow for this approach to be viable, and table-lookup is needed, or perhaps a CORDIC engine.

That makes a nice picture. I can do the same in Excel.

Why?