The sum of the radii of inscribed and circumscribed circles for an `n` sided regular polygon of side `' a '` , is: `acot(pi/n)` b. `a/2cot(pi/(2n))` c. `acot(pi/(2n))` d. `a/4cot(pi/(2n))`

the sum of the radii of inscribed and circumscribed circle of an n sides regular polygon of side a is (A) a/2 cot (pi/(2n)) (B) acot(pi/(2n)) (C) a/4 cos, pi/(2n)) (D) a cot (pi/n)

If R is the radius of circumscribing circle of a regular polygon of n-sides,then R =

Find the radius of the circumscribing circle of a regular polygon of n sides each of length is a.

If r is the radius of inscribed circle of a regular polygon of n-sides ,then r is equal to

Find the sum of the radii of the circles, which are respectively inscribed and circumscribed about the a regular polygon of n sides.

Prove that the sum of the radii of the radii of the circles, which are, respectively, inscribed and circumscribed about a polygon of n sides, whose side length is a , is 1/2acotpi/(2n)dot

Given that the area of a polygon of n sides circumscribed about a circle is to the area of the circumscribed polygon of 2n sides as 3:2 find n.

The area of the circle and the area of a regular polygon of n sides and the perimeter of polygon equal to that of the circle are in the ratio of tan(pi/n):pi/n (b) cos(pi/n):pi/n sinpi/n :pi/n (d) cot(pi/n):pi/n

The value of lim_(n->oo) [tan(pi/(2n)) tan((2pi)/(2n))........tan((npi)/(2n))]^(1/n) is

The area of a regular polygon of n sides is (where r is inradius, R is circumradius, and a is side of the triangle (a) (n R^2)/2sin((2pi)/n) (b) n r^2tan(pi/n) (c) (n a^2)/4cotpi/n (d) n R^2tan(pi/n)