If `x,y,z` be all positive acute angles then the least value of `tanx(coty+cotz)+tany(cotz+cotx)+tanz(cotx+coty)` is

If x,y,z be all positive acute angles,then the least value of tan x(cot y+cot z)+tan y(cot z+cot x)+tan z(cot x+cot y) is

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

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

If x is a positive acute angle and cosx=a, an expression for tanx in terms of a is

Three points A, B, C are marked in the stem of a coconut trees so that the distance of these points from its foot are in A.P. If the angles of elevation of these points from a point on the ground are x, y, z respectively. then. i) Draw a rough sketch of thẻ situation.. ii) Show that coty cotz, cotz cotx and cotx cot y are also in AP .

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

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

If cos x= tan y , coty= tan z , cot z= tan x then sin x=