" Evaluate tant "(tan(9 pi)/(8))

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

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

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

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

Evaluate : tan frac (pi)(8) .

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

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

Evaluate : "tan"(2pi)/(9)+"tan"(pi)/(9) + sqrt(3) "tan"(2pi)/(9) "tan"(pi)/(9)

The value of (1+tan(3 pi)/(8)*tan(pi)/(8))+(1+tan(5 pi)/(8)*tan(3 pi)/(8))+ (1+tan(7 pi)/(8)*tan(5 pi)/(8))+(1+tan(9 pi)/(8)*tan(7 pi)/(8))

Evaluate tan ((pi)/20).tan((3pi)/20).tan((5pi)/20).tan((7pi)/20).tan((9pi)/20 )