If `tan x = -(4)/(3), (pi)/(2) lt x lt pi`, then find the value of `sin. x/2, cos. x/2` and `tan. x/2`.

If tanx=-(4)/(3), (3pi)/(2) lt x lt 2pi , find the value of 9sec^(2)x-4 cot x .

if cos x= (-sqrt(15))/(4) " and " (pi)/(2) lt x lt pi find the value of sin x .

If tanx=3/4, pi < x < (3pi)/2 , find the values of sin x/2 , cos x/2 and tan x/2.

If sin x = 1/4 , pi/2 lt x lt pi , find the values of cos\ x/2 and tan\ x/2 .

If tanx=3/4, piltxlt(3pi)/2, find the value of sin(x/2) , cos(x/2), tan(x/2)

If 0 lt x lt (pi)/(2) and cos x = 0.34 , what is the value of sin ((x)/(2)) ?

If pi/2 lt x lt pi , then find d/dx(sqrt((1+cos2x)/2))

If tan x =1(1)/3 , find the value of : 4 sin^2x -3 cos^2x +2

If tan x= (3)/(4) " where " pi lt x lt (3pi)/( 2), value of tan ""(x)/(2) is

If tanA=-3/4 and pi/2 lt A lt pi , find the values of the following: i) sin(A/2) ii) cos(A/2) , iii) tan(A/2)