1. in fig,a circle touches the side bc of triangle abc at p and touches ab and ac produced at q and r respectively if aq= 5cm then the perimeter of triangle abc=?
2. the value of 6+6+6+...................is
4.a sector is cut from a circle exceeds the diameter by 16.8 cm,then the length of arc is?
5.in an A.P 3rd term is 5 and the 7th term is 9 then 11th term is?
6.in a cyclic quadrilateral ABCD,cosA+cosB+cosC+cosD=
7.the value of log [(tan1)tan2)(tan3)...................(tan89)]is
8.median of xby 5,xby4,xby2,xby3is 8.if x>0,then thevalueof x is
9. the roots of the equation a(b-c)x2+b(c-a)x+c(a-b)=0 are