" 2."cos^(-1)x+tan^(-1)2x=(pi)/(2)

tan^(-1)x+tan^(-1)(1)/(x)={[(pi)/(2), if x>0-(pi)/(2), if x<0

If tan^(-1) (-x) + cos^(-1) ((-1)/(2)) = (pi)/(2) , then the value of x is

If cos^(-1)x+Cos^(-1)y=(pi)/2 and Tan^(-1)x-Tan^(-1)y=0 then x^(2)+xy+y^(2)=

Solve the equation: cos^(2)[(pi)/(4)(sin x+sqrt(2)cos^(2)x)]-tan^(2)[x+(pi)/(4)tan^(2)x]=1

If the equation cos^(2)((pi)/4(sinx+sqrt(2)cos^(2)x))-tan^(2)(x+(pi)/4tan^(2)x)=1 then x=

tan((pi)/(4)+(1)/(2)cos^(-1)x)+tan((pi)/(4)-(1)/(2)cos^(-1)x),x!=0 is equal to x( b) 2x( c) (2)/(x) (d) none of these

If x != 0 , then tan((pi)/4 + 1/2 cos^(-1) x) + tan ((pi)/4 - 1/2 cos^(-1) x) = ......

tan((pi)/(4)+(1)/(2)cos^(-1)x)+tan((pi)/(4)-(1)/(2)cos^(-1)x),x!=0 is equal to

lim_(x rarr(pi+)/(2))((cos(tan^(-1)(tan x)))/(x-(pi)/(2)))