[-1((-1)/(2))+sin^(-1)((-1)/(2))=?],[" b) "(3 pi)/(4)],[" d) "(2 pi)/(4)]

The value of tan^(-1)(1)+cos^(-1)(-(1)/(2))+sin^(-1)(-(1)/(2)) is equal to (pi)/(4)b*(5 pi)/(12)c*(3 pi)/(4)d.(13 pi)/(12)

The solution set of the inequality 4(cos^(-1)x)^(2)-1>=0 is [-1,(cos1)/(2)] (b) [0,(pi)/(3)]((cos1)/(2),1] (d) [(pi)/(3),(2 pi)/(3)]

Value of cos^(-1) (-(1)/(2)) + sin ^(-1)""(1)/(2) is: a) 2 pi b) (pi)/(2) c) pi d) none of these

If y=cos^(-1)((1)/(2sin x)) then (d^(2)y)/(dx^(2)) at ((pi)/(4),(pi)/(4)) is

sin^(-1)((-1)/2) (a) pi/3 (b) -pi/3 (c) pi/6 (d) -pi/6

tan^(-1)((x)/(y))-tan^(-1)((x-y)/(x+y)) is (A) (pi)/(2)(B)(pi)/(3)(C)(pi)/(4)(D)(pi)/(4) or 3(pi)/(4) is (A) (pi)/(2)(B)

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)]

[tan {(pi) / (4) + (1) / (2) sin ^ (- 1) ((a) / (b))} + tan {(pi) / (4) - (1) / ( 2) sin ^ (- 1) ((a) / (b))} ^ (- 1) where (0

The principal value of sin^(-1)(sin((2 pi)/(3))) is (a)-(2 pi)/(3) (b) (2 pi)/(3) (c) (4 pi)/(3) (d) (5 pi)/(3) (e) none of these

If 4sin^(4)x+cos^(4)x=1, then x is equal to (n in Z)( a)n pi( b ) pi pi+-sin^(-1)sqrt((2)/(5))(c)(2n pi)/(3) (d) 2n pi+-(pi)/(4)