CircleHard
Question
The sum of the radii of inscribed and circumscribed circles for an n sided regular polygon of side a, is
Options
A.a cot 
B.
C.a cot 
D.
More Circle Questions
The parametric coordinates of any point on the circle x2 + y2 - 4x - 4y = 0 are -...The normal to a curve at P(x, y) meets the x-axis at G. If the distance of G from the origin is twice the abscissa of P,...The tangent to the hyperbola, x2 - 3y2 = 3 at the point (√3, 0) when associated with two asymptotes constitutes -...If the circle x2 + y2 + 2x + 2ky + 6 = 0 and x2 + y2 + 2ky + k = 0 intersect orthogonally, then k is...The centres of the circles x2 + y2 _ 6x _ 8y _ 7 = 0 and x2 + y2 _ 4x _ 10y _ 3 = 0 are the ends of the diameter of the ...