Find the value of `tan^(-1) (-tan.(13pi)/(8)) + cot^(-1) (-cot((9pi)/(8)))`

Find the value of tan^(-1) (-tan.(13pi)/(8)) + cot^(-1) (-cot((19pi)/(8)))

Find the value of tan^(-1) (-tan((13pi)/(8)))+ cot^(-1) (-cot((19pi)/(8)))

tan^(-1)(tan""(9pi)/(8)) ………

The value of : tan^(-1) ( tan ""(9pi)/(8) ) is

Find the value of "tan"^(-1)("tan"(5pi)/(6))+"cos"^(-1)("cos"(13pi)/(6)) .

Find the value of following tan^(-1)(tan""(9pi)/(8))

Q.Find the principal value of tan^(-1)(tan9(pi)/(8))

Find the value of tan^(-1)("tan"(5pi)/6)+cos^(-1)("cos"(13pi)/6) .

find the principal value of tan^(-1)(tan((9 pi)/(8)))

Show that sin ^ (- 1) ((sin (3 pi)) / (7)) + cos ^ (- 1) ((cos (46 pi)) / (7)) + tan ^ (- 1) (- (tan (13 pi)) / (8)) + cot ^ (- 1) (cot (- (19 pi) / (8))) = (13 pi) / (7)