`tan^-1(-tan(pi/4))=?`

If alpha=tan^(-1)(tan(5 pi)/(4)) and beta=tan^(-1)(-tan(2 pi)/(3)), then 4 alpha=3 beta(b)3 alpha=4 beta(c)alpha-beta=74 alpha=(3 beta)/(12) none of these

Find the value of: i) sin^(-1)(sin (2pi)/3)) , ii) cos^(-1)(cos(7pi)/6) , iii) tan^(-1)(tan(3pi)/4)

(tan(pi/4)+tan(pi/6))/(1-tan(pi/4)tan(pi/6))=?

cos[tan^(-1){tan((15pi)/4)}]

tan^(-1)(tan\ (3pi)/(4))

Principal value of tan^(-1)[tan((3pi)/4)] is

Write the principal value of tan^(-1)[tan(3 pi)/(4)]

Principal value of tan^(-1)[tan((3pi)/(4))] is