[" If "-pi<=x<=2 pi" ,then "cos^(-1)(cos7)" is "],[[" (1) "x," (2) "x-x],[" (3) "2 pi+x," (4) "2 pi]]

pi/4 + pi - pi/3 - pi/6

Range of tan^(-1)((2x)/(1+x^2)) is (a) [-pi/4,pi/4] (b) (-pi/2,pi/2) (c) (-pi/2,pi/4) (d) [pi/4,pi/2]

Range of tan^(-1)((2x)/(1+x^2)) is (a) [-pi/4,pi/4] (b) (-pi/2,pi/2) (c) (-pi/2,pi/4) (d) [pi/4,pi/2]

Range of tan^(-1)((2x)/(1+x^2)) is (a) [-pi/4,pi/4] (b) (-pi/2,pi/2) (c) (-pi/2,pi/4) (d) [pi/4,pi/2]

The range of tan^(-1)((2x)/(1+x^2)) is a) [-pi/4,pi/4] b) (-pi/2,pi/2) c) (-pi/2,pi/4] d) [pi/4,pi/2]

Range of tan^(-1)((2x)/(1+x^(2))) is (a) [-(pi)/(4),(pi)/(4)] (b) (-(pi)/(2),(pi)/(2))(c)(-(pi)/(2),(pi)/(4)) (d) [(pi)/(4),(pi)/(2)]

The value of sin(pi/48)cos(pi/48)cos(pi/24)cos(pi/12)cos(pi/6)cos(pi/3) is:

if sin ((pi)/(4) cot theta ) = cos ((pi)/(4) tan theta ), then theta is equal to : a) 2 n pi + (pi)/(4) b) 2n pi pm (pi)/(4) c) 2 n pi - (pi)/(4) d) n pi + (pi)/(4)

The value of sin(pi/14)sin((3pi)/14)sin((5pi)/14)sin((7pi)/14)sin((9pi)/14)sin((11pi)/14)sin((13pi)/14) is

If cos(sinx)=0, then x lies in (a) (pi/4,pi/2)uu(pi/2,\ pi) (b) (-pi/4,\ 0) (c) (pi,(3pi)/2) (d) null set