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

The value of (1-tan^2 15^@)/(1+tan^2 15^@) is

The value of tan^6(15^@)-15tan^4(15^@)+15tan^2(15^@)-3 is

The value of sqrt(3-2\ sqrt(2)) is (a) sqrt(2)-1 (b) sqrt(2)+1 (c) sqrt(3)-sqrt(2) (d) sqrt(3)+\ sqrt(2)

The value of sin^2 75^0-sin^2 15^0 is a. 1//2 b. sqrt(3)//2 c. 1 d. 0

The value of sin(1/4sin^(-1)((sqrt(63))/8)) is (a) 1/(sqrt(2)) (b) 1/(sqrt(3)) (c) 1/(2sqrt(2)) (d) 1/(3sqrt(3))

Let y=1/(2+1/(3+1/(2+1/(3+)))) , then the value of y is (a) (sqrt(13)+3)/2 (b) (sqrt(13)-3)/2 (c) (sqrt(15)+3)/2 (d) (sqrt(15)-3)/2

Find the value of tan.[cos^(-1)(1/2)+tan^(-1)(-1/(sqrt(3)))]

If (sinx)/(siny)=1/2,(cosx)/(cosy)=3/2 , where x , y , in (0,pi/2), then the value of "tan"(x+y) is equal to (a) sqrt(13) (b) sqrt(14) (c) sqrt(17) (d) sqrt(15)

The value of tan{cos^(-1)1/(5sqrt(2))-sin^(-1)4/(sqrt(17))} is (sqrt(29))/3 (b) (29)/3 (c) (sqrt(3))/(29) (d) 3/(29)

The value of tan{cos^(-1)1/(5sqrt(2))-sin^(-1)4/(sqrt(17))} is (sqrt(29))/3 (b) (29)/3 (c) (sqrt(3))/(29) (d) 3/(29)