Question

Let A1,A2,A3....., A12, are vertices of a regular dodecagon. If radius of its circumcircle is 1, then the length
A1.A3 is-
​

Answer 1

Answer:

1

Step-by-step explanation:

Let A1,A2,A3....., A12, are vertices of a regular dodecagon. If radius of its circumcircle is 1, then the length

A1.A3 is-

angle the radius make with two adjacent vertices = 360/12

= 30 deg

angle radius will make between A1 & A3 = 30+30 = 60 deg

Center , A1 & A3 will form hence equilateral triangle

so A1-A3 = radius = 1 unit