The expression `(tan^4x+2tan^2x+1)cos^2x ,w h e nx=pi/(12),` can be equal to (a)`4(2-sqrt(3))` (b) `4(sqrt(2)+1)` (c)`16cos^2pi/(12)` (d) `16sin^2pi/(12)`

The expression (tan^(4)x+2tan^(2)x+1)cos^(2)x, whenx =(pi)/(12) can be equal to (a)4(2-sqrt(3)) (b) 4(sqrt(2)+1) (c)16(cos^(2)pi)/(12) (d) 16(sin^(2)pi)/(12)

The expression (tan^(4)x + 2tan^2x+1)cos^(2)x, when x = pi//12 , can be equal to

For x=(pi)/(12) , the value of the expression (tan^(4)x+2tan^(2)x+1)cos^(2)x is equal to

The expression tan.(pi/4+1/2cos^(-1)x)+tan(pi/4-1/2cos^(-1)x) equals

tan(pi/4+1/2cos^-1x)+tan(pi/4-1/2cos^-1x) , x!=0 is equal to

The expression (tan(x-pi/2)cos((3pi)/2+x)-sin^3((7pi)/2-x))/(cos(x-pi/2)tan((3pi)/2+x) is equal to

If 3sin^(-1)((2x)/(1+x^2))-4cos^(-1)((1-x^2)/(1+x^2))+2tan^(-1)((2x)/(1-x^2))=pi/3, w h e r e|x|<1, then x is equal to (a) 1/(sqrt(3)) (b) -1/(sqrt(3)) (c) sqrt(3) (d) -(sqrt(3))/4

The minimum value of the function f(x)=3tan x+4cot x where x in(0,(pi)/(2)) is (A) 7 (B) 2sqrt(12) (C) 6sqrt(2) (D) 12

If 3sin^(-1)((2x)/(1+x^2))-4cos^(-1)((1-x^2)/(1+x^2))+2tan^(-2)((2x)/(1-x^2))=pi/3, w h e r e|x|<1, then x is equal to 1/(sqrt(3)) (b) -1/(sqrt(3)) (c) sqrt(3) (d) -(sqrt(3))/4

If 3sin^(-1)((2x)/(1+x^2))-4cos^(-1)((1-x^2)/(1+x^2))+2tan^(-1)((2x)/(1-x^2))=pi/3, w h e r e|x|<1, then x is equal to 1/(sqrt(3)) (b) -1/(sqrt(3)) (c) sqrt(3) (d) -(sqrt(3))/4