Grade 12th pass10 grade maths
If inside a big circle exactly 24 small circles, each of radius 2, can be drawn in such a way so that each small circle touches the big circle and also touches both its adjacent small circles, then radius of the big circle is:
(a) 2(1+cscπ24)
(b) ⎛⎝⎜1+tanπ24cosπ24⎞⎠⎟
(c) 2(1+cscπ12)
(d) 2(sinπ48+cosπ48)2sinπ24
If inside a big circle exactly 24 small circles, each of radius 2, can be drawn in such a way so that each small circle touches the big circle and also touches both its adjacent small circles, then radius of the big circle is:
(a) 2(1+cscπ24)
(b) ⎛⎝⎜1+tanπ24cosπ24⎞⎠⎟
(c) 2(1+cscπ12)
(d) 2(sinπ48+cosπ48)2sinπ24
