Question

Draw a circle of radius 4cm without using center of the circle draw a tangent to the circle at the point

Answer 1

Here is your answer...

Answer 2

Answer:

Ratio of central angle to intercepted arc is one, and thus congruent. The chord formed by AOB creates an isosceles triangle, since the radius forms two sides. Being isosceles implies two congruent angles and we can conclude it is also equal angular and also equilateral, hence the chord AB is also equal to the radius.

The arc is 60 degrees and the chord is a length equal to the radius. Convert the degrees to radians s =r threats times radius. That was the arc length formula.