`1/2tan^(- 1)(12/5)` is equal to

tan^(-1)(1/2)+tan^(-1)(1/3) is equal to

tan^(-1)(1/2)+tan^(-1)(1/3) is equal to

4 tan^(-1)(1/5)-tan^(-1)(1/239) is equal to

tan ( 2 tan^(-1) ((2)/(5))) is equal to

The value of tan^(-1)(1)+cos^(-1)(-1/2)+sin^(-1)(-1/2) is equal to pi/4 b. (5pi)/(12) c. (3pi)/4 d. (13pi)/(12)

The numerical value of "tan"(2tan^(-1)(1/5)-pi/4 is equal to____

The numerical value of "tan"(2tan^(-1)(1/5)-pi/4 is equal to____

The numerical value of "tan"(2tan^(-1)(1/5)-pi/4 is equal to____