`tan 9^(@) - tan 27^(@) - tan 63^(@) + tan 81^(@) =`

The value of tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@) is

The value of tan 81^(@) - tan 63^(@) - tan 27^(@)+ tan 9^(@) is equal to

The vlaue of tan 81^(@) - tan 63^(@) - tan 27^(@)+ tan 9^(@) is equal to

What is the value of (tan 9^(@) tan 23^(@) tan 60^(@) tan67^(@) tan 81^(@))/("cosec"^(2)72^(@)+cos^(2)15^(@)-tan^(2)18^(@)+cos^(2)75^(@))? (a) (1)/(2 sqrt(3)) (b) (sqrt(3))/(2) (c) (1)/(sqrt(3)) (d) 2 sqrt(3)

tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@)=?

Prove that tan 9 ^(@) - tan 27 ^(@)- cot 27 ^(@) + cot 9^(@)=4

tan9^(@)-tan27^(@)-tan63^(@)+tan81^(@)=