If ` tan x = ( 5)/( 12), ` then find sec x.

Find all other trigonometric ratios: tan x = - (5)/(12), x lies in second quadrant.

"If "y=(tan x)^((tan x)^(tan x))," then find "(dy)/(dx).

If tan y = (tan x+sec x-1)/(tanx -sec x+1) show that (dy)/(dx) = 1/2

Show that : int (dx)/(1+sinx)= tan x- sec x+ c

If tan50^@=x and cot(theta+5^@)=1 , then find the value of sec(90^@-theta) in terms of x.

If x in [1,2], then find the range of f(x)=tan x.

If x = a sec theta and y = b tan theta , then find the relation between x and y free from theta .

Find the set of values of x for which (tan 3x - tan 2x)/(1 + tan 3x cdot tan 2x) = 1

If " "sec theta = 5/4, "cosec" phi = 13/12 " then find the value of " sec ( theta + phi).

If tan 2x.tan2y = 1, find sec(x+y).