" (vi) "tan7^(@)tan23^(@)tan60^(@)tan67^(@)tan83^(@)

tan20^(@)tan40^(@)tan60^(@)tan80^(@)

Evaluate : tan7^(@)tan23^(@)tan60^(@)tan67^(@)tan83^(@)+(cot54^(@))/(tan36^(@))+sin20^(@)sec70^(@)-2

Evaluate : tan7^(@)tan23^(@)tan60^(@)tan67^(@)tan83^(@)+(cot54^(@))/(tan36^(@))+sin20^(@)sec70^(@)-2

tan20^(@)tan40^(@)tan60^(@)tan80^(@)=?

Evaluate :tan7^(0)tan23^(@)tan60^(@)tan67^(0)tan83^(@)

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)

tan 20^(@) tan 40^(@) tan 60^(@) tan 80^@=

tan 10^(@)*tan20^(@)*tan30^(@)*tan40^(@)*tan50^(@)*tan60^@tan70^(@)*tan80^(@)=