" (vii) "cos(157(1)/(2))^(@)=-(1)/(2)sqrt(2+sqrt(2))

cos^(-1)((1)/(sqrt(2)))+sec^(-1)(-sqrt(2))

cos^(-1)(1/(sqrt(2)))+sec^(-1)(-sqrt(2))=

Find the value of 4cos[cos^(-1)((1)/(4)(sqrt(6)-sqrt(2)))-cos^(-1)((1)/(4)(sqrt(6)+sqrt(2)))] .

Find the value of 4cos[cos^(-1)((1)/(4)(sqrt(6)-sqrt(2)))-cos^(-1)((1)/(4)(sqrt(6)+sqrt(2)))] .

The decreasing order of, A=(Sin^(-1)((1-sqrt(3))/(2sqrt(2)))), B=Cos^(-1)((-1)/sqrt(2)), C=Tan^(-1)((sqrt(3)+1)/(2sqrt(2))) is

(sqrt((1)/(2)))sqrt(((1)/(2)+(1)/(2)sqrt(((1)/(2)))sqrt(((1)/(2)+(1)/(2)sqrt((1)/(2)+(1)/(2)sqrt((1)/(2)))))_(-.2))

lim _(x to ((1)/(sqrt2))^(+))(cos ^(-1) (2x sqrt(1- x ^(2))))/((x-(1)/(sqrt2)))- lim _(x to ((1)/(sqrt2))^(-))(cos ^(-1) (2x sqrt(1-x ^(2))))/((x- (1)/(sqrt2)))=

Find the value of cos^(-1)sqrt(2/3)-cos^(-1)""(sqrt(6)+1)/(2sqrt(3))