What makes a circle so special and useful? How are the theorems in circle used? How it is used as art and as tools? How are trigonometric functions embedded? Explain and give evidences.

              Circle is very special and useful in the sense that it helps us in our daily life. Circle is not just an art but it helps and create new thing/s. Circle is commonly used almost in every thing like, in the car the tire is circle, like the electric fan and many things. Why is it circle is being used in cars? Simple, it's because if the tire of the car is circle it can easily move back and forth it was like "hassle-free".

             In the rides the we rode, trigonometric functions was embedded (refer to the evidence/s below) into it. Like in the Ferris Wheel and Star Frisbee, the said rides was divided by lines forming a triangles that helps to become circle. These lines makes the circle perfect. The circle has a center wherein the force of action was placed in the center so that it can move easily and perfectly.