`sin^(-1) (sin 2013^@) + cos^(-1) cos(2013^@) + tan^(-1)(tan 2013^@)` is equal to

sin ^ (- 1) (sin3) + cos ^ (- 1) (cos7) -tan ^ (- 1) (tan5) =

sin ^ (- 1) (sin2011 ^ (@)) + cos ^ (- 1) (cos2011 ^ (@)) + tan ^ (- 1) (tan2011 ^ (@)

cos^(-1) (cos (-5)) + sin^(-1) (sin(6)) - tan^(-1)(tan (12)) is equal to : (The inverse trigonometric functions take the principal values)

cos^(-1) (cos (-5)) + sin^(-1) (sin(6)) - tan^(-1)(tan (12)) is equal to : (The inverse trigonometric functions take the principal values)

tan^(-1)[(cos x)/(1+sin x)] is equal to

tan^-1[(cos x)/(1+sin x)] is equal to

sin cot^(-1) tan cos^(-1) x is equal to :

tan^-1[(cos x)/(1+sin x)] is equal to

tan^-1[(cos x)/(1+sin x)] is equal to