If ` x= tan15^(@) , y="cosec"75^@ and z= 4 sin18^(@)` , then

If x = tan 15^(@), y = cosec 75^(@) " and " z =4 sin 18^(@), then

If x=tan15^(@),y=cosec75^(@),z=4sin18^(@)

If x=tan15^(@),y=cosec75^(@),z=4sin18^(@)

tan15^(@) + tan 75^(@)=

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

If cos x = tan y , cos y = tan z , cos z = tan x , then the value of sin x is :

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