" 20."[" 20."aft x=sqrt(a root(3)(b sqrt(a^(3)sqrt(b.........oo))))(d)/(d),],[(4)/(b^(-))]

Evaluate : (a) sqrt(xsqrt(xsqrt(x.....oo))) (b) sqrt(6+ sqrt(6 + sqrt(6 + ......oo))) (c) sqrt(a^(3)root(3)(b sqrt(a^(3) root(3)(b.......oo))))

The value of sqrt(6+sqrt(6+sqrt(6+)))......... is 4(b)3(c)-2(d)3.5

sqrt((2116))-sqrt(1600)=sqrt((?))( a) 20(b)64(c)81(d)36

The square root of (7+3sqrt(5))(7-3sqrt(5)) is sqrt(5)(b)2(c)4(d)3sqrt(5)

The value Of sqrt(6+sqrt(6+sqrt(6+.....))) is a)-2 b)3.5 c)3 d)4

Which of the following is equal to root(3)(-1)?(sqrt(3)+sqrt(-1))/(2) b.(-sqrt(3)+sqrt(-1))/(sqrt(-4)) c.(sqrt(3)-sqrt(-1))/(sqrt(-4))d.-sqrt(-1)

If 0lt=xlt=pi/3 then range of f(x)=sec(pi/6-x)+sec(pi/6+x) is (a) (4/(sqrt(3)),oo) (b) (4/(sqrt(3)),oo) (c) (0,4/(sqrt(3))) (d) (0,4/(sqrt(3)))

The director circle of a hyperbola is x^(2) + y^(2) - 4y =0 . One end of the major axis is (2,0) then a focus is (a) (sqrt(3),2-sqrt(3)) (b) (-sqrt(3),2+sqrt(3)) (c) (sqrt(6),2-sqrt(6)) (d) (-sqrt(6),2+sqrt(6))