If `tanx+tany=25` and `cotx+coty=30` then the value of `tan(x+y)` is

If tan x+tan y=25 and cot x+cot y=30

If tanx+tany=(5)/(6) and cotx+coty=5 , then tan(x+y) is

If tanx = sqrt3 + 2, then the value of tanx - cotx is

x-y = pi/4 and cotx + coty=2

If cosx=tany ,coty=tanz ,cotz=tanx , then the value of sinx is (a) 2cos18^0 (b) cos18^0 (c) sin18^0 (d) 2sin18^0

If tanx =n tany , n in R^+ then the maximum value of sec^2(x-y) is

The value of (cotx-tanx)/(cot2x) is

The value of (cotx-tanx)/(cot2x) is

If tanx=2/3 and tany=3/4 then tan(x+y)=