Tan^-1 1/3+ Tan^-1 1/5+ Tan^-1 1/7+ Tan^-1 1/8 =

If Cosec^-1 x= 2Cot^-1 7+ Cos^-1(3/4) then the value of x is

IfTan^-1(1/7)= α, Tan^-1(1/3)=β then cos 2α =

Cos (sin^-13/5+Sin^-1 5/13)=

The range of Sin^-1 x - Cos^-1 x is

The range of Sin^-1 x+ Cos^-1 x is

The ascending order of A= Sin^-1(log₃2),B= Cos^-1(log₃(1/2)), C=Tan^-1(log_1/3 2) is

Sin^-1(24/25) +Tan^-1(5/12) =

Tan^-1(cot x) - Tan^-1(cot 2x)=

If Sin^-1 x+ Sin^-1 y+ Sin^-1 z=π then x²+y²+z²+2xyz=