Find the values of the following :
i) `tan ((19pi)/3)`
ii) `sec((-22pi)/3)`

Find the values of the following: tan105^(@) ii.(tan(13 pi))/(12)

Find the values of the following trignometric ratios: (a) tan (19pi)/3

Find the principal values of the following (i) tan^(-1) (tan. (2pi)/(3)) (ii) tan^(-1) (tan (-6))

Find the principal values of the following : (i) sin^(-1)(sin.(5pi)/(3)) (ii) cos^(-1)cos((4pi)/(3)) (iii) cos [(pi)/(3) + cos^(-1) (-(1)/(2))]

Find the values of the trigonometric function tan ,(19 pi)/(3),

Find the value of cos((19pi)/3)