Value of `3tan^(-1)(1/3)+tan^(-1)(1/2)+sin^(-1)(1/sqrt5)+cos^(-1)(2/sqrt5)` is greater than

tan^(-1)(2)=sin^(-1)(2/(sqrt(5)))=cos^(-1)(1/(sqrt(5)))

Prove that : tan^(-1)(1/4)+tan^(-1)(2/9)=sin^(-1)(1/sqrt5) .

The value of tan^(-1)(sqrt3)+cos^(-1)((-1)/sqrt2)+sec^(-1)((-2)/sqrt3) is

The value of tan^(-1)(sqrt3)+cos^(-1)((-1)/sqrt2)+sec^(-1)((-2)/sqrt3) is

The value of 3 "tan"^(-1)(1)/(2) + 2 "tan"^(-1)(1)/(5) + "sin"^(-1)(142)/(65sqrt(5)) is :

The value of 3 "tan"^(-1)(1)/(2) + 2 "tan"^(-1)(1)/(5) + "sin"^(-1)(142)/(65sqrt(5)) is :

Find the principal value of: i) sin^(-1)(sqrt(3)/2) ii) sin^(-1)(1/2) iii) cos^(-1)(1/2) iv) tan^(-1)(1) v) tan^(-1)(1/sqrt(3)) vi) sec^(-1)(2/sqrt(3)) , vii) "cosec"^(-1)(sqrt(2)) .

tan[1/2Cos^(-1)(sqrt5/3)]=

sin[cos^(-1)(-1/2)+tan^(-1)(sqrt(3))]