Show that `tan 75^0 + cot 75^0 = 4`

Show that tan 75^(@) = (sqrt3) +(1 )/( sqrt3 -1) = 2 + sqrt3. Hence deduce that tan 75^(@) - cot 75^(@) = 4 sin 60^(@).

Prove that: tan75^0+cot75^0=4

Tan 75 - Cot 75=

Value of tan 75^(@) + cot 75^(@) = ?

Prove that : tan 225^@ cot 405^@+ tan 765^@ cot 675^@=0

Show that tan1^0tan2^0tan89^0=1

Show that: tan 10^(@)tan 15^(@) tan 75^(@)tan 80^(@)=1

Show that : (i) tan 10^(@) tan 15^(@) tan 75^(@) tan 80^(@) = 1 (ii) sin 42^(@) sec 48^(@) + cos 42^(@) "cosec 48"^(@) = 2

Prove that (tan75^(@))/(cot15^(@))=1

If 8theta = pi show that cot 7theta+cot theta = 0