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" 8.Evaluate : "tan7^(@)tan23^(@)tan60^(...

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

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

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

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

Evaluate : tan7^0tan23^0tan60^0tan67^0tan83^0

Shown that : tan48^(@)tan23^(@)tan42^(@)tan67^(@)=1

Shown that : tan48^(@)tan23^(@)tan42^(@)tan67^(@)=1

Show that : tan48^(@)tan23^(@)tan42^(@)tan67^(@)=1