" 2."(1)/(210190)tan((1)/(2)cos^(-1)(2)/(sqrt(5)))

tan[1/2cos^(-1)((sqrt(5))/3)]=

Evaluate: tan{(1)/(2)cos^(-1)((sqrt(5))/(3))}

Value of 3tan^(-1)((1)/(3))+tan^(-1)((1)/(2))+sin^(-1)((1)/(sqrt(5)))+cos^(-1)((2)/(sqrt(5))) is greater than

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

The value of tan(1/2 cos^(-1)(2/(sqrt(5)))) is

tan ((1) / (2) (cos ^ (- 1) ((sqrt (5)) / (3)))

The value of tan(1/2 cos^(-1)'2/(sqrt(5))) is

tan ^ (- 1) ((1) / (4)) + tan ^ (- 1) ((2) / (9)) = cos ^ (- 1) ((2) / (sqrt (5)))

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