Value of `tan( 55pi + pi/4 )`
( A ) -1
( B ) `sqrt3`
( C ) `1/sqrt(3)`
( D ) 1

The value of tan 45^@ (A) sqrt3 (b) frac(sqrt3)(2) (C) frac(1)(sqrt3) (D) 1

The value of (1-tan^(2)15^(@))/(1+tan^(2)15^(@)) is (A) 1(B)sqrt(3)(C)(sqrt(3))/(2)(D)2

The value of tan^(-1) ( sqrt(2) sin "" ( 3 pi)/( 4)) is

The value of (1-tan^(2)15^(@))/(1+tan^(2)15^(@))=(A)1(B)sqrt(3) (C) (sqrt(3))/(2)(D)2

16 * cos ""(pi)/(12) * cos"" (4pi)/(12) * cos"" (5pi)/(12)= A) sqrt1 B) sqrt2 C) sqrt3 D) sqrt4

The value of sin(pi/3-sin^(-1)(4/5)) is (a) (3sqrt(3)-4)/(10) (b) (3sqrt(3)+4)/(10) (c) (4sqrt(3)-3)/(10) (d) (4sqrt(3)+1)/(10)

If cos^-1( (x^2-1)/(x^2+1))+ tan^-1( (2x)/(x^2-1)) = (2pi)/3 , then x equal to (A) sqrt(3) (B) 2+sqrt(3) (C) 2-sqrt(3) (D) -sqrt(3)

Find the value of tan^(-1)sqrt(3)+sec^(-1)2 (A). (2 pi)/(3) (B). (pi)/(2) (C). (pi)/(3) (D) pi

The value of (lim)_(nvecoo)(tan^(-1)x))) is equal to -1 (b) pi/2 (c) -1/(sqrt(2)) (d) 1/(sqrt(2))

The value of the integral int_(pi//6)^(pi//3) (1)/(1+sqrt(tan x))dx is