Question

a regular polygon is inscribed in a circle. if a side subtends an angle of 30° at the centre ,what is the number of its sides ?

Answer 1

If a side substends an angle of 30°.
Then,
angle between the sides = 180° - 30°
= 150°
Interior angle in a regular polygon
= 180° ( n-2 )/n
So,
150° = 180° ( n-2 )/n
150°*n = 180°* n - 360°
30° n = 360°
n = 12
So,
Sides = 12.

Hope this may help you.....

Asking questions is a sign of intelligency.

Answer 2

first of all a big thanks for asking questions

saving my point

increasing my point

sab answer batate hai mai mistake guess karungi ok