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tan6^(@)tan42^(@)tan66^(@)tan78^(@)...

tan6^(@)tan42^(@)tan66^(@)tan78^(@)

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Prove that: tan6^(0)tan42^(0)tan66^(@)tan78^(@)=1

The value of tan 6^(@) tan 42^(@) tan 66^(@) tan 78^(@) is

Prove that tan A. (tan 60^(@) +A). Tan (60^(@)-A)=tan 3A and hence find the value of tan 6^(@) tan 42^(@) tan 66^(@) tan 78^(@) .

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

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

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

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