Some methods to get positions using angle and radius.

gistfile1.cs

  private float Sine(float angle){
		float sin = Mathf.Sin((Mathf.PI / 180)* angle);
		return sin;
	}
	
	private float Cosine(float angle){
		float cosine = Mathf.Cos((Mathf.PI / 180) * angle);
		return cosine;
	}

	private float GetXPosWithAngleAndRadius(float angle, float radius){
		float xpos = Sine(angle) * radius;
		return xpos;
	}
	
	private float GetYPosWithAngleAndRadius(float angle, float radius){
		float xpos = Cosine(angle) * radius;
		return xpos;
	}