Two stepper motor rotate with sine and cosine wave

I am new to robotics, and I’m unsure if this is a really dumb question or not. I have two micro stepper drivers and two stepper motors, and my objective is to rotate the two stepper motors using a sine wave for one motor and a cosine wave for the other. Currently, with the current code utilizing 800 microsteps, the two stepper motors rotate at the same speed. How can I achieve the rotation of the two motors with sine and cosine waves?

int x;

void setup()
{
  pinMode(9, OUTPUT); // set Pin9 as PUL for motor 1
  pinMode(8, OUTPUT); // set Pin8 as DIR for motor 1
  pinMode(3, OUTPUT); // set Pin3 as PUL for motor 2
  pinMode(2, OUTPUT); 
}
void loop()
{
  digitalWrite(8, HIGH); 
  digitalWrite(2, HIGH); 
  
for (x = 0; x < 800; x++)
{
    digitalWrite(9, HIGH); 
    delayMicroseconds(1000); 
    digitalWrite(9, LOW); 
    delayMicroseconds(1000); 
    
    digitalWrite(3, HIGH); 
    delayMicroseconds(1000); 
    digitalWrite(3, LOW); 
    delayMicroseconds(1000); 

}

  delayMicroseconds(1000); 

}

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