" 3) "tan35+-2tan20=cos x

Find theta, if sin x = 2sin theta, cos x = tan y, tan x = cos z and cos y = tan z

Prove that: (2 sin 68°)/(cos 22°)-( 2 cot 15°)/( 5 tan 75°)- 3( tan 45° tan 20° tan 40 tan 50° tan 70°)/5 = 1 .

Prove that : tan 20° tan 35° tan 45° tan 55° tan 70° = 1

Prove that, tan 35^(@) + tan 10^(@) + tan35^(@) tan 10^(@) = 1

2tan ^ (- 1) (cos x) = tan ^ (- 1) (2cos ecx)

2 tan^(-1) (cos x) = tan^(-1) (2 cosec x)

If tan x + tan 2x+tan 3x=tan x tan 2x tan 3x then |sin 3x+cos 3x|

Solve the following : (2sin22^@)/(cos68^@)-(2cot75^@)/(5 tan15^@)-(8 tan 45^@ tan20^@ tan 40^@ tan 50^@ tan70^@)/5

The value of tan 31^@ tan 33 ^@ tan 35 ^@ tan 50^@ is

tan35 ^ (@) + 2tan20 ^ (@) = tan x rArr x =