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[" (i) "tan7^(@)*tan23^(@)*tan60^(@)*tan...

[" (i) "tan7^(@)*tan23^(@)*tan60^(@)*tan67^(@)*tan83^(@)=sqrt(3)],[" rii) "tan15^(@)tan25^(@)tan60^(@)tan65^(@)tan75^(@)=sqrt(3)]

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

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

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

Find tan15^(@).tan25^(@).tan45^(@).tan65^(@).tan75^(@) .

Evaluate : tan 15^@ tan25^@tan60^@tan65^@tan75^@ .

(tan60^(@)-tan30^(@))/(1+tan60^(@)tan30^(@))=tan30

show that tan48^(@).tan23^(@)*tan42^(@)*tan67^(@)=1

Prove that: tan20^(@)tan40^(@)tan60^(@)tan80^(@)=3

Prove that :tan20^(@)tan40^(@)tan60^(@)tan80^(@)=3

Evaluate tan20^(@)tan25^(@)tan65^(@)tan70^(@) .